JP3924274B2 - Underwater detection system - Google Patents

Description

  The present invention relates to an underwater detection system that searches an underwater situation and displays the search result on a screen.

  An underwater detection system that mounts a sonar on a ship, emits ultrasonic waves into the water using this sonar, receives reflected ultrasonic waves (echoes) from underwater objects, and displays the underwater conditions on the screen is known. One example of such a system is one that displays the state of the seabed or school of fish (see, for example, Patent Document 1).

  In the technique described in Patent Document 1, the sea is searched from the own ship with a sonar to obtain echo data of the seabed and fish school and stored in a memory, and the PPI screen representing the seabed situation and fish school is displayed from the echo data. In addition, a plane image obtained by seeing through a vertical cross section at an arbitrary angle with respect to the traveling direction of the ship from above is displayed together with the plane obtained in the past. It is displayed on the other part. This makes it easy to understand the depth and undulations of the seabed along the ship's path and the distribution of underwater objects.

  As another conventional example, a sonar and a position measuring device are provided for the own ship and the cruising ship, respectively, and their own tracks are measured, and the underwater is searched by the sonar, and a display provided on the own ship is used. The wake of the ship and the underwater situation searched by the ship, and the wake of the ridgeline and the searched underwater situation measured by the convoy are displayed simultaneously. On these display screens, the positions, navigation directions, and ship speeds of the ship and the convoy ship are also displayed in text (for example, see Patent Document 2).

As yet another conventional example, a two-dimensional sonar screen centered on the ship and a listening screen showing the position of the underwater reflector in the direction specified by the sonar screen (listening marker direction) are displayed. In this listening screen, a reception scale with its own ship position set to 0 is provided so that the position of the search target can be known. In addition, on the listening screen, transmission / reception of ultrasonic waves is performed close to the reception scale. A reception echo distance marker representing the distance between the point and the underwater reflector is displayed so that even if the SN of the underwater reflector image to be viewed deteriorates, this can be clearly determined (for example, (See Patent Document 3).
JP-A-9-243735 JP-A-10-90411 JP 2000-187069

  By the way, the prior art described in the above-mentioned patent documents 1 to 3 searches for conditions such as the seabed and fish school around the ship, and basically includes a wave transmitting and receiving device for such a search. The active sonar is used and the sonar screen is displayed on a two-dimensional screen centered on the ship. With the technique described in Patent Document 3, the position of the ultrasonic reflector can be more easily determined. I am doing so.

  However, as an underwater reflector, it may be unknown what the substance is, and it may be necessary to clarify this. In such a case, a method is used in which a search is performed using a passive sonar that receives ultrasonic waves emitted by the underwater reflector, and the received ultrasonic waves are analyzed and displayed on the screen. In such a method, various methods are taken for analysis, and it is necessary to display each analysis result on the screen, and setting conditions for search by the sonar are appropriately selected according to the analysis method. Is required and the operation becomes very complicated. Such a thing cannot be implement | achieved by the technique of the said patent documents 1-3 which searches for the presence or absence of an underwater reflection object, and its position using an active sonar.

  The present invention has been made in view of such a point, and an object thereof is to easily and accurately perform an operation for searching for an underwater object on a display screen displaying a search result of the underwater object. It is to provide an underwater detection system that can be used.

In order to achieve the above object, the present invention includes an operator room, a management room as an upper part of the operator room, and a control room as an upper part of the management room, and emits sound waves and receives the reflected sound waves. Underwater detection provided with processing means for generating measurement data by analyzing the received output of a passive sonar that receives a sound wave from an active sonar or a sound source, and a display means for displaying a search screen based on the measurement data In the system, the display screen of the display means displays the instruction / report / shared information display area for displaying instructions and reports from the upper layer, information about the ship equipped with the active sonar and information about the analysis target. Common information display area, provision-type information display area that displays alarms from the upper layer and instructions for this, and information for each function that displays a search screen based on measurement data There are a basic screen, an environment screen, and a sensor screen in which a display area, a search screen displayed in the function-specific information display area, and a function-specific information setting area for inputting setting conditions for the search screen to be displayed are set. In the function-by-function information display area of the basic screen, a search screen that displays the situation around the ship in the form of a two-dimensional map, centered on the ship equipped with the active sonar, is displayed. In the function information display area of the environment screen, a search screen representing the surrounding environment that affects the propagation of sound waves is displayed. In the function information display area of the sensor screen, the active sonar selected in the function information setting area of the sensor screen. and displays the search screen according to any of the measured data of the passive sonar, in each function information setting area, arbitrarily selecting one of the basic screen and the environment view and the sensor screens Selection buttons for displaying and in which is displayed.

In the function-specific information setting area, when one of the basic screen, environment screen, or sensor screen is selected and displayed, it is displayed in the function-specific information display area of the selected basic screen, environment screen, or sensor screen. The setting information input items for the search screen are displayed.

The display means is provided in each of the operator room and the management room for performing the search operation of the analysis object using an active sonar or passive sonar, and the display means in the management room has an operator room in the information setting area for each function. It is possible to select a search work instruction in the operator room and a confirmation of the search work in the operator room . In the search work instruction, a condition for the search work is set and notified to the operator room to confirm the search work. Then, a screen showing the status of search work being performed in the operator room can be displayed in the function-specific information display area.

  According to the present invention, the information necessary for the sound source analysis work is displayed simultaneously with the search information of the sonar on one display screen, and the operation for the analysis work becomes easy and accurate. Makes it possible to perform various tasks.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a diagram showing a schematic configuration of an embodiment of an underwater detection system according to the present invention, wherein 1-3 are sonars, 4 and 5 are signal processing units, 6 is an environment grasping unit, 7 is a display operation control unit, 8 is an operator room, 9 is a display console, 10 is a management room, 11 is a display console, 12 is a control unit, 13 is a communication unit, and 14 is a network.

  2 is a diagram showing the arrangement of the sources 1 to 3 shown in FIG. 1, wherein 200 is a ship, 201 is a buoy, and 1-3 are sonars.

  First, in FIG. 2, an active sonar 1 having a wave transmission / reception function is mounted on a ship 200, which emits an ultrasonic pulse into water and receives a reflected wave from an underwater object. The ship 200 is towing the other sonar 2. This sonar 2 is a passive sonar having only a wave receiving function, and receives ultrasonic waves radiated from underwater (hereinafter referred to as a sound source). An electrical signal corresponding to the received ultrasonic wave is taken into the ship 200 as an acoustic signal via a cable. Further, a plurality of buoys 201 having sonars 3 are arranged in an area where the ship navigates for underwater detection (only one is shown here). The sonar 3 is also a passive sonar having only a wave receiving function, and receives ultrasonic waves emitted from a sound source, and an electric signal (acoustic signal) corresponding to the received ultrasonic waves is transmitted by radio communication to the ship 200. Sent to.

  In FIG. 1, the acoustic signal output from the active sonar 1 is supplied to the signal processing unit 4 and subjected to processing such as frequency analysis. Similarly, the acoustic signals output from the passive sonars 2 and 3 are supplied to the signal processing unit 5 and subjected to processing such as frequency analysis. The environment grasping unit 6 detects an environment related to propagation of ultrasonic waves such as underwater temperature in the search region. The environment information obtained by the environment grasping unit 6 is used for processing each acoustic signal by the signal processing units 4 and 5 and is corrected according to the environment.

  The operator room 8 is provided with a display console 9 that can display the search results for each of the sonars 1, 2, and 3 (only one of the display consoles 9 is shown here). This display console 9 displays the data obtained by the processing of the signal processing units 4 and 5 as search data under the control of the display device control unit 7, and the environment information obtained by the environment grasping unit 6. Or to display. In addition, the display console 9 can generate data on the movement trajectory of the sound source designated based on the data from the signal processing units 4 and 5 and display it on the display screen.

  The management room 10 gives instructions to the operator room 8 based on instructions from the control unit 12 and manages work in the operator room 8, and is provided with a display console 11 (here. In FIG. 1, only one display display table 11 is shown, but a predetermined number is provided). This display console 11 also has the same function as the display console 9 in the operator room 8, but is further displayed on the confirmation screen for the instruction content to the operator room 8 and each display console 9 in the operator room 8. The displayed screen can also be displayed.

  Communication with the outside of the system is performed from the control unit 12 through the communication unit 13. The control unit 12, the signal processing units 4 and 5, the environment grasping unit 6, and the display operation control unit 7 are connected to each other via a network 14.

  The display consoles 9 and 11 include a mouse (not shown) and a pointing device such as a rack pad, and can perform various operations. A touch panel may be provided on the display screen, and the operation may be performed on the display screen.

  FIG. 3 is a diagram schematically showing an analysis result of an acoustic signal in the signal processing unit 5 of the passive sonars 2 and 3 in FIG. 1 and a display method thereof.

  In FIG. 3A, the analysis result of the acoustic signal is obtained as three-dimensional space data having “observation frequency”, “observation direction”, and “observation time” as coordinate axes, and the state of each observed sound source is This is represented as a locus 20 in this three-dimensional space. Such analysis result data (hereinafter referred to as detection data) is displayed as two-dimensional data on the display screens of the display consoles 9 and 11 of the operator room 8 and the management room 10, and the detection data display form in this case is as follows. Designates the frequency range of the ultrasonic waves from the sound source observed by the passive sonars 2 and 3, and the own ship (that is, the ship 200 in FIG. 2) of the observation frequency (ie, the sound source) within the designated frequency range. BTR (Bearing Time Recorder: time / azimuth) display 21 indicating the temporal change of the azimuth from) and the azimuth to be observed are designated, and the temporal transition of the observation frequency (ie, sound source) in the designated observation azimuth is designated. A LOWAR (Low Frequency Analysis Recorder: time / frequency) display 22 indicating (transition) and an observation time are designated, and the direction of each observation frequency (ie, sound source) at the designated observation time is represented. There is an F-θ (Frequency θ: direction / frequency) display 23.

  FIG. 3 (b) shows the BTR display 21, the LOFAR display 22, and the F-θ display 23 of the measurement data shown in FIG. 3 (a). In the BTR display 21, the frequency within the specified frequency range is shown. A temporal change in the direction of each sound source that emits ultrasonic waves is displayed as a locus 24. In the LOFAR display 22, a temporal change in the observation frequency of each sound source in a designated direction (with a predetermined range) is displayed as a locus 25. The type of the sound source can be specified by the observation frequency or the like. Therefore, from the LOFAR display 22, it is possible to recognize what type of sound source exists in the designated direction at each observation time. In the F-θ display 23, the direction of each sound source at the designated time is displayed as a point 26. Thereby, for example, when and in which direction the type of sound source (observation frequency) of interest is known can be known.

  Next, screens displayed on the display screens on the display consoles 9 and 11 of the operation room 8 and the management room 10 shown in FIG. 1 will be described.

  FIG. 4 is a diagram showing the basic configuration of such a screen. The area at the center of the display screen is a function-specific information display area D, the common information display area C is vertically long on the left side, and the function is vertically long on the right side. Each information setting area E is set. In addition, an instruction / report / shared information display area A is set horizontally in the upper left half of the display screen above a part of the common information display area C and the function-specific information display area D, and the function-specific information display area D A provision type information display area B is set between the instruction / report / shared information display area A and the function-specific information setting area E.

  For example, in the case of the operator room 8, the instruction / report / shared information display area A is an area for displaying an instruction from an upper layer part, an intention of the upper layer part, and the like, as instructed from the management room 10. The information display area B is an area for displaying an alarm or the like. The function-specific information display area D is an area for displaying a screen based on measurement data obtained by the sonars 1, 2, 3, data analyzed by the environment grasping unit 6, and what kind of screen is displayed. It is the function-specific information setting area E that determines this. In the function-specific information setting area E, an operation for selecting a screen to be displayed in the function-specific information display area D and a condition setting operation for obtaining the screen are performed. The common information display area C is information relating to the own ship and the sound source to be detected, and is an area for displaying common information not related to the above-described work.

  First, the screen on the display device console 9 (FIG. 1) in the operator room 8 will be described.

  FIG. 5 shows a basic screen 30 displayed on the display device console 9 and relates to the display of detection results in a menu of various items displayed on the initial screen (not shown) of the display device console 9. When the menu “display item setting” is selected, the basic screen 30 is displayed.

  In the basic screen 30, in the instruction / report / shared information display area A, the menus “display item setting”, “target registration”, “target deletion”, “data recording”, “parameter setting” displayed on the initial screen are displayed. ”,“ Alert list ”and other menu lists 31 are displayed so that other menus can be selected. In addition, a sonar display field 32 instructed from the upper layer part is provided. Here, the management room 10 instructs to use the sonars 1 and 2 for underwater detection, and “XXXXXX” is instructed. It shows the history of orders from the upper part to the sonar. The cursor 32a indicates that there is a last “x” command for the use of the sonar 1 at present. Further, an instruction from the upper layer part regarding the report from the display console 9 to the upper layer part by the operator is displayed on any of the “confirmation” display part 33a, the “acknowledgement” display part 33b, and the “rejection” display part 33c.

  In the provision type information display area B, an alarm from the upper layer when there is an obstacle or the like in the navigation direction and the content of the instruction for this are displayed. Here, there are obstacles at azimuth 255 degrees (deg), 256 degrees, 257 degrees, and 180 degrees, and avoiding this is displayed as an alarm, and with this, the sonar 1 is instructed to continue detection Yes.

  The function-specific information setting area E is an area for input setting of work performed based on the instruction in the instruction / report / shared information display area A, and the work screen selection button 34 is used for the work screen selection section 34 in the uppermost layer. Certain “basic”, “environment”, and “sensor” buttons are provided. By selecting this, the work screen is switched. Here, the basic work is selected by the “basic” button, and the basic screen 30 is displayed as the work screen. This basic screen 30 is for confirming the situation around the own ship (in FIG. 1), for example, and the search results by the sonars 1, 2, and 3 show the own ship 40a in the function-specific information display area D. It is displayed in the form of a map 40 having a center. In this map 40, an azimuth graduation 40b with the course of the own ship 40 as 0 degree is displayed, and the position of a known buoy 40c or a detected ship 40d, etc., is detected by the passive sonars 2 and 3 on top of this. A mark 40e indicating the direction of the sound (bearing) is displayed. Further, the obstacle presented in the provision type information display area B is also displayed on the map 40 when it can be searched.

  It is also possible to display the map 40 with a topographic map at the position superimposed thereon. Based on the topographic map data stored in the control unit 12 or the topographic map data read from another database through the network, the topographic map is displayed on the map 40 based on the topographic map data at the position centered on the ship. Are displayed in layers. Thereby, it is possible to easily grasp the terrain around the ship and the target.

  Then, the search result by the sonar targeting the obstacle alerted in the provision type information display area B is displayed in the search column 35. In the search column 35, the target name and target information obtained by the analysis of the search state, the search result indicating whether or not the search has been completed, and the like are displayed and reported to the upper layer.

  Further, in the function-specific information setting area E, a column 36 displaying the current connection status with other departments, a column 37 indicating the target number status, and the like are provided.

  In the information display area D for each function, the map 40 is displayed, and a detection registration field 41 for searching and registering a target underwater object is displayed. For example, when there is an unknown underwater object (sound source) whose position is displayed on the map 40, when the operator designates this as a search target with the cursor, the passive sonars 2 and 3 (FIG. 1) perform the search, The frequency analysis result 43a of the search result is displayed in the detection column 42a of the detection registration column 41. In the detection registration column 41, a reference frequency information column 42b is also provided. In this reference frequency information column 42b, sound frequency analysis results for each propulsion device type and ship type are registered as reference frequency information 43b, and the frequency analysis results 43a of the search target in the detection column 42a are registered. The search target can be specified by collating with the reference frequency information 43b. Here, there are a manual (MANUAL) mode and an automatic (AUTO) mode as the modes of collation. The “MANUAL” mode is displayed in the detection column 42a by manually selecting and operating the propeller type and ship type. The reference frequency information 43b corresponding to the frequency analysis result 43a to be detected can be detected. The “AUTO” mode is set as “AUTO1” mode, “AUTO2” mode,... For each propeller type and ship type, and the corresponding reference frequency information 43b is registered and displayed for each. Yes. These modes are set by operating the application button. When the propulsion device type and ship type of the search target can be specified in the “MANUAL” mode or the “AUTO” mode, the information is registered in the common information display area C.

  In the “MANUAL” mode, the reference frequency information 43b is displayed for each by switching the propeller type and ship type by manual operation, and this is compared with the frequency analysis result 43a in the detection column 42a. Thus, it is possible to determine the propulsion device type and ship type of the search target.

  In the case of “AUTO” mode, it is possible to take a method of searching for a target corresponding to a propeller type and a ship type determined in advance. In this case, the corresponding “AUTO” mode is set by selecting the application button for the desired propeller type and ship type. As a result, when the underwater objects of the corresponding propulsion device type and ship type are searched, information related thereto is registered in the common information display area C. For example, when searching for the propulsion device type “xxx” and the ship type “merchant ship”, the “AUTO2” mode is set by the “apply” button. Thus, for each sound source appearing on the map 40, the frequency analysis of the received sound wave is sequentially performed based on the detection outputs of the passive sonars 2 and 3 (FIG. 1), corresponding to the frequency component 43b in the “AUTO2” mode. The sound source from which the frequency analysis result 43a to be obtained is obtained is searched. When there is such a sound source, information with the propulsion device type “xxx” and the ship type “merchant ship” is displayed in the common information display area C.

  In the common information display area C, the own ship information display field 44 for displaying own ship information such as the course (deg) of the own ship 40a, the navigation speed (kt (knot)), and the current position represented by latitude / longitude, and the map 40 It is registered by the above registration operation in the cursor information display field 45 indicating the relative positional relationship of the cursor from the ship 40a and the relative positional relationship with the selected position, and the detection registration field 41 of the function-specific information display area D. A sound source information display field 46 for displaying information related to the sound source is provided. In the sound source information display column 46, when a sound source is searched and registered by the search operation in the detection registration column 41 of the function-specific information display area D, “detection” is displayed by the display unit 46a, and a propellant related to this sound source is displayed. The type, ship type, direction and distance from own ship 40a, etc. are displayed.

  When the “environment” button is selected by the work screen selection unit 34, an environment screen 50 shown in FIG. 6 is displayed. In the environment screen 50, the environment is analyzed by the environment grasping unit 6 (FIG. 1) based on the input information set in the function-specific information setting area E, and the environment information as a result of the analysis is displayed as function-specific information. It is displayed in area D. In this case, when this environmental information cannot be displayed in the function-specific information display area D having a predetermined size, the function-specific information display area D can be extended to the common information display area C. FIG. 6 shows such a display state.

  In the function-specific information setting area E of the environment screen 50, a basic information setting field 51, a voyage related information setting field 52, a target related information setting field 53, a sonar related information setting field 54, and a “calculate” button 55 are provided. .

  The basic information setting field 51 includes an item “calculation type” for designating a range of calculation (sound wave propagation status), an item “water temperature measurement base material type” for designating an environmental measurement device, and a measurement position (own ship position) as latitude / It consists of items to be entered in longitude, items to enter the measurement month and wind speed, etc. The latitude / longitude, measurement month and wind speed are automatically entered along with the display of the environment screen 50.

  The voyage-related information setting field 52 is a field for inputting the own ship speed (kt), and the target-related information setting field 53 is a target sound source speed, depth, and level of each frequency component of ultrasonic waves from the sound source. It is a column to be input assuming that. The sonar related information setting column 54 is a column in which the detection depth of the sensor, the detection gain, and the detection threshold are automatically input.

  After the information is set in the basic information setting field 51, the voyage related information setting field 52, the target related information setting field 53, and the sonar related information setting field 54, when the “Calculate” button 55 is operated, the setting information is used. The environment measured by the water temperature measuring instrument (X-BT) designated by the environment grasping unit 6 is analyzed, and the environmental information obtained as a result is displayed in the information display area D for each function.

  In the information display area D for each function, a water temperature / depth curve diagram 56a measured by the designated water temperature measuring instrument (X-BT), and a sound speed / depth curve indicating the sound speed with respect to the depth converted from the water temperature / depth curve diagram 56a. FIG. 56b, a parameter 56c indicating a specific depth predetermined for the water temperature / depth curve diagram 56a and the sound speed / depth curve diagram 56b, and the super value obtained by calculation from data such as the above curve diagrams 56a and 56b. A sound ray diagram 56d showing a propagation path with respect to a sound wave radiation angle in a two-dimensional space between a depth and a horizontal distance, and a target depth diagram showing an effective range of ultrasonic waves at a target depth calculated from the sound ray diagram 56d. 56e etc. are displayed. In the target depth diagram 56e, a desired depth can be set as appropriate, and the effective range of ultrasonic waves for each depth "xxx" feet, "xxxxxxx" feet, and "xxxxxxx" feet. Is specified (in this case, the effective range is shown in black).

  In this sound ray map 26d, a topographic map 150 as shown in FIG. 6 can be displayed in an overlapping manner. As described above, the topographic map 150 represents the topography of the position based on topographic map data stored in the control unit 12 or another database connected via the network. By this display, the relationship between the sound ray diagram and the terrain can be easily grasped.

  Here, a water temperature / depth curve diagram 56a and a sound speed / depth curve diagram 56b are displayed on the left side of the sound diagram 56d, and a target depth diagram 56e is displayed on the lower side. The depth axes of the water temperature / depth curve diagram 56a and the sound speed / depth curve diagram 56b are parallel to the depth axis of the sound diagram 56d, and the units of these depths are also set equal. Here, the display range of the depth is set to 0 to 42000 feet, but the positions of the water temperature / depth curve diagram 56a, the sound speed / depth curve diagram 56b, and the sound ray diagram 56d at the depth of 0 feet are aligned on one horizontal line. The position of 42,000 feet deep is also aligned on one horizontal line. Accordingly, when the sound ray diagram 56d is viewed based on the water temperature / depth curve diagram 56a and the sound speed / depth curve diagram 56b, comparison between them becomes easy.

  Similarly, the horizontal distance axes of the sound ray diagram 56d and the target depth diagram 56e are parallel to each other, and the units of these horizontal distances are also set equal. The position of the horizontal distance of 0 kiloyards between the sound ray diagram 56d and the target depth map 56e is aligned on one vertical line, and similarly, the position of the maximum horizontal distance displayed is also aligned on one vertical line. . This facilitates comparison between the sound ray diagram 56d and the target depth diagram 56e.

  In the detection by the sonar when “sensor” is selected by the work screen selection unit 34 described below, the environment information obtained by the work on the environment screen 50 is used as the environment information.

  In the environment screen 50, the designation / report / shared information display area A and the provision type information display area B are the same as the basic screen 30 shown in FIG.

  When “sensor” is selected by the work screen selection unit 34 in the function-specific information setting area E of the environment screen 50 shown in FIG. 6, a sensor screen 60 shown in FIG. 7 is displayed. In the function-specific information setting area E of the sensor screen 60, a “sensor selection” field 61 and a “display format selection” field 62 are provided. Either can be selected. Here, it is assumed that the sonar 1 is selected.

  In the “display format selection” column 62, “own ship center two-dimensional search display” by the active sonar 1 or the display format shown in FIG. 3B can be selected. When this “own ship center two-dimensional search display” is selected, information related to the selected display format (search type, search range, search start distance, search width, search direction, etc.) in the related information setting field 62a. Also, information (transmission format, pulse width, transmission frequency, transmission output, depression angle) related to the transducer of the active sonar 1 specified in the “sensor selection” column 61 can be input. Then, “Sorner 1” is input in the “sensor selection” column 61, the ship center two-dimensional search display is input in the “display format selection” column 62, and predetermined input is performed in the related information setting column 62a. When the “transmission permission” button 62b is turned on and there is an instruction for transmission permission from the upper layer part, by operating this “transmission permission” button 62b, the sonar designated in the “sensor selection” column 61 is activated. Detecting operation by the active sonar 1 is performed based on the information input in the “display format selection” column 62 and the related information setting column 62a. The detection result of the active sonar 1 is supplied as search data from the signal processing unit 4 (FIG. 1), and is displayed in the function-specific information display area D in the own ship center two-dimensional search display mode.

  In the function-by-function information display area D of the sensor screen 60, the detection result in the water centering on the own ship (the ship 200 in FIG. 2) 40a is displayed, and the underwater 63 is appropriately displayed. In this case, the sound wave range 64 expands with time, but the underwater object that has entered the sound wave range 64 is displayed as an image. The underwater 65 shown by a broken line is a display of past results detected before unit time. This display fades with time and disappears. When the sound wave range 64 is entered, the display is updated to the latest information.

  In such display in the function-specific information display area D, when the desired underwater 63 is clicked and specified with the cursor, an enlarged display area 66 is set in a part of the function-specific information display area D, and the underwater specified for this is displayed. The image of the object 63 is enlarged and displayed. Thereby, the shape of this underwater object 63 etc. can be observed in detail.

  In the common information display area C of the sensor screen 60, an environment information column 67 and a tracking target information column 68 are provided in addition to the own ship information display column 44 and the cursor information display column 45. As the environment information in this case, the information set in the “display format selection” field 62 among the environment information obtained on the environment screen 50 shown in FIG. 6 is used. Information (such as underwater sound speed, wind speed, layer deep sound speed, detection depth of layer depths 4 and 3) is displayed. When the tracking target is detected (in this case, the detection display unit 69a is turned on), when the tag number to be set and its classification are determined, the classification reliability and classification are set. Further, the Doppler speed is displayed in the tracking target information column 68 as tracking target information. If no detection is made, the lost display display portion 69b is turned on, and the tracking target information column 68 is not displayed.

  In the sensor screen 60, the instruction / report / shared information display area A and the provision-type information display area B are the same as the basic screen 30 and the environment screen 50 described above.

  When the “time / frequency” display mode (LOFAR display mode shown in FIG. 3B) is selected in the “display format selection” column 62 of the sensor screen 60, the sensor screen 70 shown in FIG. 8 is displayed.

  In this sensor screen 70, the instruction / report / shared information display area A, the provision type information display area B, and the common information display area C are the same as the sensor screen 60 shown in FIG. Further, in the function-specific information setting area E, the related information setting field 62a in FIG. 7 is replaced with the related information setting field 71, the detection range setting part 72, and the frequency specifying part 73.

  In this time / frequency display mode, the detection results of the passive sonars 2 and 3 (FIG. 1) are used, and a plurality of within a predetermined azimuth range including the azimuth specified by the search range setting unit 72 is used. The observation results (detection data) with respect to the azimuth are displayed on the function-specific information display unit D. Here, it is assumed that the four-direction detection data is displayed.

  In addition, “time / frequency display” is selected in the “display format selection” column 62 of the function-specific information setting area E, and the performance information for each frequency analyzer 1, 2, 3, 4 is selected in the related information setting column 71. Is set. Such information includes a search frequency, an analysis width, an analysis mode, and a beam channel, and analysis results of different orientations by these frequency analyzers 1, 2, 3, and 4 are displayed in the function-by-function information display area D at time / frequency. Displayed as displays 74a, 74b, 74c, 74d.

  In the search range setting unit 72, an azimuth scale 72a centered on the own ship 40a is displayed, for example, in an annular arrangement at intervals of 5 °, and over this, a searchable range 72b at the present time is displayed. Is shown in a frame shape. A cursor 72c is displayed so as to be movable along the array outside the direction scale 72a. The direction of the cursor 72c relative to the ship 40a indicates the direction of search specified. Then, four azimuths, two on both sides around the cursor 72c, are the above-described azimuths that are actually detected. The four azimuths to be actually searched are clearly indicated by azimuth graduations 72a facing them, for example, with black paint. Normally, the cursor 72c is normally displayed in white, but when it is clicked by a touch operation, the azimuth is specified and displayed in black. Of course, even in this black paint state, the cursor 72c can be moved, and at this time, the white display is restored.

  Assuming that the four directions designated by the cursor 72c in the search range setting unit 72 are 15 °, 20 °, 25 °, and 30 °, in the function-specific information display area D, as shown in the figure, for each direction. The frequency analysis result is displayed in the time / frequency displays 74a, 74b, 74c, and 74d described with reference to FIG. In these time / frequency displays 74a, 74b, 74c and 74d, the horizontal axis represents the search frequency range and the vertical axis represents the elapsed time. The search frequency range on the horizontal axis represents the display mode selected in the related information setting column 71. It is according to. Note that the horizontal frequency axes of these time / frequency displays 74a, 74b, 74c, and 74d are all aligned.

  The frequency designation section 73 is for designating a desired frequency in the time / frequency displays 74a, 74b, 74c, and 74d displayed on the function-specific information display section D. The frequency designation section 73 includes the frequency axis 73a and the frequency axis. It consists of cursors 73b and 73c for designating the frequency on 73a. These cursors 73b and 73c can be moved along the frequency axis 73a by a touch operation, whereby a predetermined frequency can be designated. Here, since two cursors 73b and 73c are provided, two frequencies can be designated by the time / frequency displays 74a, 74b, 74c and 74d. The frequency range represented by the frequency axis 73a is equal to the frequency range of the time / frequency displays 74a, 74b, 74c, and 74d, and corresponds to the display mode selected in the related information setting column 71.

  In addition, the function-specific information display area D is provided with a designated frequency display section 75 for displaying the frequency designated by the frequency designation section 73 in the upper layer of the time / frequency displays 74a, 74b, 74c, 74d. The designated frequency display unit 75 includes a frequency axis 75a that is parallel to the time / frequency displays 74a, 74b, 74c, and 74d and has the same length as these, and two cursors 75b and 75c that move along the frequency axis 75a. ing. The frequency axis 75a corresponds to the frequency axis 73a in the frequency designation unit 73, and the cursors 75b and 75c correspond to the cursors 73b and 73c in the frequency designation unit 73, respectively. Accordingly, the frequency axis 75a represents the same frequency range as the time / frequency displays 74a, 74b, 74c, 74d, and is arranged in alignment with the time / frequency displays 74a, 74b, 74c, 74d.

  Thus, since the frequency axis 75a represents the same frequency range as the time / frequency displays 74a, 74b, 74c, 74d and is aligned with the time / frequency displays 74a, 74b, 74c, 74d, the cursor 75b, The position of 75c on the frequency axis 75a represents the frequency in the time / frequency display 74a, 74b, 74c, 74d. When the cursors 73b and 73c are moved by the frequency designation unit 73, the cursors 75b and 75c on the designated frequency display unit 75 are moved in the same manner. Thereby, the frequency designated by the time / frequency display 74a, 74b, 74c, 74d can be confirmed.

  By operating the cursors 73b and 73c in the frequency designation section 73 to set the predetermined frequency position, the “display format selection” column 62 is operated to operate the “time / direction (BTR) display” described with reference to FIG. Is selected, the display moves to the sensor screen 80 shown in FIG. 9 which performs time / direction (BTR) display for the frequency designated by the cursors 73b and 73c.

  In this sensor screen 80, the information similar to the related information setting field 62a on the sensor screen 60 of the vehicle center two-dimensional search display (direction / frequency display) shown in FIG. An information setting field 81 is set, and a search range setting unit 72 and a frequency specifying unit 73 are also displayed as they are. However, in this case, the cursor 72c in the search range setting unit 72 is displayed in white, and the cursors 73b and 73c in the frequency specifying unit 73 are displayed in black. That is, the search frequency is determined.

  In the information display area D for each function, time / direction displays 82a and 82b for the frequencies designated by the frequency designation unit 73 (here, 800 Hz and 400 Hz) are displayed. In these time / orientation displays 82a and 82b, the horizontal axis represents the direction, and the vertical axis represents the passage of time. Here, the range of the azimuth | direction of these time / azimuth | direction displays 82a and 82b is all directions, and these azimuth | direction axes (horizontal axis) have gathered.

  In the information display area D for each function, an array of azimuth scales 83 is provided above the time / azimuth displays 82a and 82b in parallel with the azimuth axes of the BTR displays 82a and 82b. This arrangement of the azimuth scales 83 corresponds to a linear extension of the azimuth scale 72a of the detection range setting unit 72, and is aligned with the azimuth axes of the time / direction displays 82a and 82b. Therefore, this azimuth scale 83 represents the azimuth in the time / azimuth display 82a, 82b. In the azimuth range specified by the cursor 72c in the detection range setting unit 72, the azimuth scale 72a is displayed in black, and the corresponding azimuth scale 83 is also displayed in black. Therefore, the specified azimuth range in the time / azimuth display 82 a and 82 b by the detection range setting unit 72 can be known from the azimuth scale 83.

  The instruction / report / shared information display area A, the provision type information display area B, and the common information display area C on the sensor screen 80 are the same as the sensor screen 70 shown in FIG.

  In this sensor screen 80, by operating the cursor 72c with the detection range setting unit 72 and specifying the search direction and selecting the frequency analysis display in the “display format selection” field 62, the specified search direction is A sensor screen 70 shown in FIG. 8 is displayed.

  FIG. 10 shows a sensor screen 80 in the case where there is an instruction from the upper layer for the time / direction display currently being executed.

  In this case, in this case, there is an instruction in the provision type information display area B, and the content is displayed in the function-specific information display area D as the instruction content column 86. The instruction in the provision type information display area B specifies the instruction object 84 by the sensor type in the sensor selection field 61 and the display mode (display format) in the display format selection field 62, and “reflect all” and “detailed settings”. Is instructed to handle the contents of the instruction. The instruction content shown in the instruction content column 86 indicates a recommended value of a value set in the function-specific information setting area E, and here, a recommended value for the related information setting column 81 is shown. Yes.

  Such an instruction from the upper layer part is possible because the upper layer part also manages the screen of each display console 9 in the operator room 8 (FIG. 1).

  As described above, in the operator room 8, the search result can be viewed from a plurality of viewpoints, and a more reliable analysis result can be obtained.

  Note that the azimuth / frequency display mode shown in FIG. 3B can also be specified in the display format selection field 62 of the information setting area E for each function.

  Next, the screen on the display console 11 of the management room 10 in FIG. 1 will be described.

  FIG. 11 shows a basic screen 90 displayed on the display console 11, and parts corresponding to the basic screen 30 shown in FIG.

  In this figure, the basic screen 90 is almost the same as the basic screen 30 shown in FIG. 4 on the display console 9 in the operator room 8. However, in this display console 11, the operations “search” and “position” are added to the operations “basic”, “environment”, and “sensor” on the display console 9 in the operator room 8. Therefore, in the work screen selection unit 91 in the function-specific information setting area E, a “basic” button, an “environment” button, a “search” button, a “position” button, and a “sensor” button are provided as work screen selection buttons. Is provided.

  Other parts of the function-specific information setting area E, the instruction / report / shared information display area A, the provision-type information display area B, the common information display area C, and the function-specific information display area D are displayed on the display console 9 of the operator room 8. Since this is the same as the basic screen 30 (FIG. 5), further description of the basic screen 90 is omitted.

  FIG. 12 shows an environment screen 100 obtained by selecting the “environment” button in the work screen selection unit 91 in the function-specific information setting area E of the basic screen 90. This environment screen 100 is also the operator room 8 This is the same as the environment screen 50 (FIG. 6) displayed on the display console 9 of FIG. However, the work screen selection unit 91 is the same as the basic screen 90 shown in FIG.

  When the “search” button is selected in the work screen selection unit 91 of the function-specific information setting area E on the basic screen 90 or the environment screen 100 described above, a search screen 110 shown in FIG. 13 is displayed. This search screen 110 represents an instruction from the management room 10 to the operator room 8.

  In the function-specific information setting area E of the search screen 110, a command from the upper layer (that is, the control unit 12 in FIG. 1) is displayed in the next command column 111 of the work screen selection unit 91. This command includes a search priority type and search priority content. Here, it is assumed that the search priority type is an area-designated search, and that an operation is designated by designating an area.

  Next, a work selection field 112 is provided, which allows the work for the lower layer, that is, the operator room 8 to be selected. Here, as the work, there are a “sensor instruction” and a “search situation” for monitoring the search situation. In this search screen 110, “sensor instruction” is selected. As an instruction method at this time, there are an automatic instruction and a manual instruction.

  When this “sensor instruction” is selected, an instruction content column 113 and a sensor detailed setting column 114 are displayed. In this instruction content column 113, the types of sensors of the sonars 1, 2, and 3, the display method such as the own ship center two-dimensional search display for the active sonar, and the direction / distance display for the passive sonar, and the instruction target (That is, designation of the display console 9 in the operator room 8) is displayed. Here, the sensor type is the sonar 1, and the instruction target is the second display console 9 in the operator room 8. In this case, the display console 9 is in charge of the sonar 2 and instructs the ship center two-dimensional search display and also instructs the frequency analysis display.

  The sensor detailed setting column 114 is for creating information on the performance of the sensor (that is, the sonars 1 and 2) instructing the instruction target, and in the case of own ship center two-dimensional search display and the direction / distance. Created for each display. Here, the direction / distance display is shown. Such information includes information related to a search item such as a search format and a search range, and information related to a sonar transducer, as shown in the figure. In order to create such information, the sensor present value column 115a indicating the current state of the sensor with respect to the designated display method, that is, the direction / distance display, and the sensor recommended column indicating the state recommended by the upper layer part (control room 12) 115b is displayed, and the contents to be set for each item such as the search format and the search range can be selected from the sensor current value column 115a and the sensor recommendation column 115b. For example, when the item “search range” is set in the sensor detailed setting column 114, if the application button in the item “search range” in the sensor current value column 115a is selected, the item “search range” of the sensor current value 115a is selected. When the value is set in the item “search range” in the sensor detailed setting column 114 and the application button in the item “search range” in the sensor recommended value column 115b is selected, the item “search range” in the sensor recommended value column 115b is selected. The value at is set in the item “search range” in the sensor detailed setting column 114.

  The function-specific information setting area E includes a “current value” button 116a and a “recommended value” button 116b. By selecting the “current value” button 116a, the entire sensor current value column 115a is displayed. Information can be set in the sensor detailed setting column 114, and information on the entire sensor recommended value column 115b can be set in the sensor detailed setting column 114 by selecting the “recommended value” button 116b.

  Although not described here, the same applies to the setting of related information in other display modes such as frequency analysis display.

  As described above, when the setting in each column is completed and the “instruction” button 117 is operated, the above setting contents are sent to the designation target (in this case, the second display console 9 in the operator room 8). . Thereby, in this display device console 9, this instruction is displayed in the instruction / report / shared information display area A on each screen shown in FIGS. 5 to 10, and the own ship center two-dimensional search display shown in FIG. 8 or the sensor screen 60 for performing the frequency analysis display shown in FIG. 8, the information in the sensor detailed setting column 114 relating to the own ship center two-dimensional search display and the frequency analysis display is set as the related information setting for these sensor screens 60. The fields 71 and 81 are displayed.

  In this way, the management room 10 can give detailed work instructions to the operator room 8 as the lower layer. Note that the display contents in the area other than the function-specific information display area D and the function-specific information setting area E on the search screen 110 are the same as those of the basic screen 90 shown in FIG.

  When the work “search situation” is selected in the work selection column 112 of the search screen 110 shown in FIG. 13, a search screen 120 showing the search situation on the display console 9 of the operator room 8 shown in FIG. 14 is displayed.

  In the search screen 120, as shown in the figure, in the function-specific information setting area E, the display operation of the designation target is performed together with the work screen selection unit 91, the command field 111, and the work selection field 112 similar to the search screen 110 shown in FIG. The current performance information 122 of the sonar transducers 1 and 2 on the table 9, the performance information 123 of the frequency analyzers 1 to 4, and the common information 121 related to the search are displayed. In the work selection field 112, any one of the display consoles 9 in the operator room 8 as a lower layer can be designated as a confirmation target. Further, in the function-specific information display area D, the current search range 125 of the display console 9 of the operator room 8 to be confirmed is indicated by a broken line on the two-dimensional display map 124 centering on the own ship 40a. Is displayed. Note that the display contents in the area other than the function-specific information display area D and the function-specific information setting area E on the search screen 120 are the same as those of the basic screen 90 shown in FIG.

  In this way, the status of the search operation of each display console 9 in the operator room 8 from the management room 10 can be confirmed.

  Next, when the “position” button in the work screen selection unit 91 is selected on any of the screens shown in FIGS. 11 to 14, a position screen 130 shown in FIG. 15 is displayed. In this position screen 130, the observation results of the passive sonars 2 and 3 are analyzed to obtain information on the course of the target sound source.

  In FIG. 15, in the function-specific information setting area E of the position screen 130, the analysis method selection column 131 for selecting an analysis method, an analysis target selection, and a propagation path is displayed next to the work screen selection unit 91. A column 132 and a manual analysis selection column 133 are displayed. The analysis method selection field 131 is used to specify an analysis method or to select an analysis target, and to specify a sound wave transmission path in a convergence band (a convergence band is an area where a sound source is expected to exist). Thus, different convergence bands can be set according to the predicted distance to the sound source, and the size, that is, the width and the length of each convergence band are different. )

  The automatic analysis selection column 132 is used for designating that the course is automatically analyzed, and the measurement result for the designated convergence zone (first convergence zone) is the analysis direction, analysis distance, analysis course, Displayed as analysis speed. This measurement is automatically performed every predetermined time, and the measurement result for each measurement is displayed. Each measurement result is also displayed in a graph. When the predetermined number of measurements are completed, the course is analyzed from the previous measurement results, the analysis results are displayed in the automatic analysis selection field 132, and this is registered by operating the “Register” button 132a. Are displayed in the analysis registration result column 134, and the course of the analysis result is displayed on the map 135 in the function-specific information display area D.

  The manual analysis selection field 133 is used to instruct that the course of the sound source can be analyzed manually, and when there are a plurality of manual analysis methods, one of them can be selected. . Here, it is assumed that there are two types of manual analysis methods. This manual analysis is set for each measurement by obtaining the measurement results from the passive sonars 2 and 3 every predetermined time, setting the convergence band specified in the analysis method selection field 131 in the direction of arrival of the sound wave based on the measurement results. The sound source course is determined by manual adjustment based on the convergence band. The result of the analysis is displayed in the manual analysis selection field 133, and is registered by operating the “registration” button 133a, and is also displayed in the analysis registration result field 134. Further, the map 135 is displayed in the information display area D for each function. The course is displayed above.

The function-specific information display area D shown on the position screen 130 shows a state in which a sound source course 136 as an analysis result is displayed. Here, the ship 40a measures the direction of the sound source (not shown) to be analyzed at a predetermined time interval, that is, at measurement times t ₁ , t ₂ , t ₃ , t ₄ , and t ₅ at regular time intervals. Are performed by the passive sonars 2 and ₃ , and the first convergence band is located at a position where the sound sources of the sound wave paths A ₁ , A ₂ , A ₃ , A ₄ , and A ₅ indicating the sound wave arrival directions at these measurement positions are predicted. 137a, 137b, 137c, 137d, and 137e are set. At each measurement time t _{1 to} t ₅ , the course 136 is determined on the assumption that the sound source exists in each of the convergence zones 137a to 137e and is traveling at a constant speed in a predetermined direction.

  The topographic map can also be displayed on the map 135 on the position screen 130 in an overlapping manner. As described above, the topographic map represents the topography of the position based on topographic map data stored in the control unit 12 or another database connected via the network. As a result, it is possible to easily grasp the terrain around the ship and the target.

  In the case of manual analysis, a course that satisfies the above conditions is obtained manually using the information display area D for each function, which will be described with reference to FIG. In FIG. 16, the same reference numerals are given to the portions corresponding to FIG.

In FIG. 16A, when the measurement at a series of measurement times t _{1 to} t ₅ is completed, the sound wave paths A _{1 to} A ₅ are set and displayed from the position of the ship 40a at the measurement times t _{1 to} t _5. . Then, as shown in FIG. 16B, for each of the sound wave paths A _{1 to} A ₅ , convergence bands 137a to 137e having the same width and length are set and displayed in the areas where the sound source at that time is predicted. Let Thereafter, as shown in FIG. 16C, a fulcrum 138 is temporarily set in the first convergence zone 137a and an end point 139 is temporarily set in the last convergence zone 137e, and the fulcrum 138 and the end point 138 are connected by a straight line. The provisional course 136 ′ is obtained. Then, assuming the position of the sound source on the temporary course 136 ′ for each measurement time t _{1 to} t ₅ , an error of the assumed sound source position is obtained. In FIG. 16 (c), this error is indicated by a circle with a size corresponding to the size. In addition, the error can be displayed by a numerical value or a graph.

  This error will be described in more detail with reference to FIG.

The course 136 that the sound source seeks is such that the position of the sound source at each measurement time t _{1 to} t ₅ is on this path 136, is on the corresponding sound wave path, and is in the corresponding convergence band. It is a course. The positions of the sound source at these measurement times t _{1 to} t ₅ are obtained from the relationship between the distance between the start point 138 and the end point 139 and the measurement times t _{1 to} t ₅ , assuming that the sound source is traveling at a constant speed. As a result, it is set on the temporary course 136 ′, but when this position deviates from the corresponding sound wave path or convergence band, there is an error in the position of the obtained sound source, and there is an error in the temporary course 136 ′. become.

For example, as shown in FIG. 17 (a), deviates from the position 140 is the ultrasonic path A ₂ of the sound source obtained for sonic path A _2, if deviated from the appropriate convergence zones 137b, the position 140 There is an error, and the magnitude of the error is the distance between the intersection 141 between the sound wave path A ₂ and the boundary line of the convergence band 137 _b and the position 140 of the sound source. Such an error is represented by a circle 142 centered on the position 140 of the sound source with the magnitude of the error as a radius.

Further, as shown in FIG. 17 (b), even in the convergence zone 137b that the position of the sound source 140 are true, if displaced from a corresponding acoustic path A _2, so that in this position 140 there is an error . As the error, the distance between the position 140 of the sound source 'intersection 141 between the acoustic path A _2' temporary path 136 and the radius is represented by a circle 142 centered on the position 140.

In FIG. 16C, a temporary course 136 ′ is set, the position of the sound source on the path 136 ′ is obtained at each measurement time t _{1 to} t ₅ , and the position of these sound sources is obtained as an error. This is represented by the circle described in FIG.

  Here, the temporary path 136 ′ can be changed by changing the positions of the start point 138 and the end point 139 within the corresponding convergence bands 137 a and 137 e. Based on this, the positions of the start point 138 and the end point 139 are changed so that the error at each set position of the sound source is dispersed and becomes almost uniform, and the dispersed error is minimized. Perform the operation. As shown in FIG. 16D, when the positions of the start point 138 and the end point 139 are obtained so as to satisfy the above conditions, the path obtained from the positions of the start point 138 and the end point 139 at this time is the sound source path 136 as the analysis result. It is.

  As described above, the sound source path 136 to be analyzed is obtained.

1 is a configuration diagram schematically illustrating an embodiment of an underwater detection system according to the present invention. It is a figure which shows the arrangement | positioning condition of each sonar in FIG. It is a figure which shows roughly the analysis result of the acoustic signal in the signal processing part of the passive sonar in FIG. 1, and its display method. It is explanatory drawing about the screen displayed on the display screen in the display console of the operation room or management room shown in FIG. It is a figure which shows one specific example of the basic screen displayed on the display apparatus console of an operator room in FIG. It is a figure which shows one specific example of the environmental screen displayed on the display apparatus console of an operator room in FIG. It is a figure which shows the 1st display format of the sensor screen displayed on the display apparatus console of an operator room in FIG. It is a figure which shows the 2nd display format of the sensor screen displayed on the display apparatus console of an operator room in FIG. It is a figure which shows the 3rd display format of the sensor screen displayed on the display apparatus console of an operator room in FIG. It is a figure which shows a state when there exists an instruction | indication from the upper layer part of the sensor screen displayed on the display apparatus console of an operator room in FIG. It is a figure which shows one specific example of the basic screen displayed on the display apparatus console of the management room in FIG. It is a figure which shows a specific example of the environment screen displayed on the display apparatus console of the management room in FIG. It is a figure which shows one specific example of the search screen for the instruction | indication to the operator displayed on the display apparatus console of the management room in FIG. It is a figure which shows one specific example of the search screen for confirming the search condition of the operator displayed on the display apparatus console of the management room in FIG. It is a figure which shows one specific example of the position screen for analyzing the target course displayed on the display apparatus console of the management room in FIG. It is a figure which shows one specific example of the analysis method of the course of the sound source on the position screen shown in FIG. It is explanatory drawing about the position error of the sound source in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Active sonar 2,3 Passive sonar 4,5 Signal processing part 6 Environment grasping part 7 Display operation control part 8 Operator room 9 Display operation console 10 Management room 11 The display operation console 12 is a control part 30 Basic screen 31 Menu list 32 Display column 34 work screen selection section 35 search field 36 connection status field 37 target number status field 40 map 40a own ship 40b bearing scale 40c buoy 40d sound source 40e bearing 41 search registration field 42a search field 42b reference frequency information field 43a, 43b frequency analysis result 44 Own ship information display field 45 Cursor information display field 46 Sound source information display field 50 Environment screen 51 Basic information setting field 52 Navigation related information setting field 53 Target related information setting field 54 Sonar related information setting field 55 “Calculate” button 56a Water temperature / depth Curve 56b Sound speed / depth curve 56c Parameter 56d Sound ray diagram 56e Target depth diagram 60 Sensor screen 61 Sensor selection field 62 Display format selection field 62a Related information setting field 63 Transmission permission button 63 Underwater 64 Sound wave range 65 Underwater 66 Enlarged display area 67 Environmental information field 68 Tracking target Information field 69a Detection display part 69b Missed display part 70 Sensor screen 71 Mode selection part 72 Detection range setting part 72a Direction scale 72b Detectable range 72c Cursor 73 Frequency designation part 74a-74d LOFER display 75 Specified frequency display field 75a Frequency axis 75b , 75c Cursor 80 Sensor screen 81 Related information setting field 82a, 82b BTR display 83 Direction scale 84 Target object 85 Message 86 Instruction content field 90 Basic screen 91 Work screen selection part 100 Environment screen 110 Search screen 111 Command field 12 Work selection field 113 Instruction content field 114 Sensor detailed setting field 115a Sensor current value field 115b Recommended sensor value field 116a "Current value" button 116b "Recommended value" button 117 Instruction button 120 Search screen 121 Common information 122 Performance information 123 Performance information 124 Map 125 Current Search Range 130 Position Screen 131 Analysis Method Selection Field 132 Automatic Analysis Selection Field 132a “Registration” Button 133 Manual Analysis Selection Field 133a “Registration” Button 134 Analysis Registration Result Field 135 Map 136 Course 137a to 137e Convergence Zone 150 Topographic map

Claims (3)

An operator room, a management room as an upper layer part of the operator room, and a control room as an upper layer part of the management room, receiving sound waves from an active sonar or a sound source that emits sound waves and receives reflected sound waves An underwater detection system provided with processing means for analyzing the received output of the passive sonar to generate measurement data and display means for displaying a search screen based on the measurement data,
On the display screen of the display means,
Instruction / report / shared information display area for displaying instructions and reports from the upper layer,
A common information display area for displaying information about the ship carrying the active sonar and information about the analysis target;
A provision-type information display area for displaying an alarm from the upper layer and instructions for the alarm;
An information display area for each function for displaying a search screen based on the measurement data;
Selection of the search screen displayed in the information display area for each function and selection of a basic screen, an environment screen, and a sensor screen in which the information setting area for each function for inputting the setting conditions of the search screen to be displayed is selected Can be displayed automatically,
In the function-by-function information display area of the basic screen, the search screen is displayed that represents the situation around the ship in the form of a two-dimensional map centered on the ship equipped with the active sonar. In the information display area for each function, the search screen representing the surrounding environment that affects the propagation of sound waves is displayed. In the information display area for each function of the sensor screen, the information setting area for each function in the sensor screen is displayed. The search screen with the measurement data of either the selected active sonar or the passive sonar is displayed,
A selection button for arbitrarily selecting and displaying any of the basic screen, the environment screen, and the sensor screen is displayed in the information setting area for each function. In claim 1,
In the function-specific information setting area, when any one of the basic screen, the environmental screen, and the sensor screen is selected and displayed, the basic screen, the environmental screen, or the sensor screen that is selectively displayed is displayed for each function. An underwater detection system, wherein input items for setting information for the search screen displayed in the information display area are displayed . In claim 1 or 2,
The display means is provided respectively on said operator compartment and the control room to perform the search operation to be analyzed by using the active sonar and the passive sonar,
Wherein the said display means in the control room, a selectable verify and search operations in the instruction and the operator compartment of the search operations in the operator chamber in said each function information setting region,
The instruction of the search operation, by setting the conditions for the search task notifies the operator compartment, with the confirmation of the search operations, the function screen showing the status of the search operations being performed by the operator chamber An underwater detection system characterized in that it can be displayed in each information display area.

Images