JP3109487B2 - Arrival time calculation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus suitable for use in a terminal radar information processing apparatus provided at an airport. The present invention relates to an arrival time calculation device that calculates an arrival time and reports the arrival time to another system.

[0002]

2. Description of the Related Art Conventionally, an apparatus for capturing an aircraft near an airport using a secondary surveillance radar and calculating an arrival time by adding the captured time and the estimated flight time to arrival corresponding to the captured point. For example, Japanese Patent Application Laid-Open No. 2-29
An aircraft arrival time automatic calculation device disclosed in Japanese Patent No. 3682 is known. In the apparatus disclosed in this publication, as can be seen from the flowchart shown in FIG. 7, first, the current position of the tracking target whose position is updated for each antenna scan of the secondary monitoring radar is input (step 110), and then the tracking is performed. Search for a fixed point that matches the current position of the target (step 11)
1). The fixed points refer to, for example, positions A to F that are set in advance as two-dimensional data along an approach course as shown in an example shown in FIG. Are determined at appropriate intervals in consideration of the approach operation, topographical conditions, and the like.

[0003] Based on such fixed points, the current position of the tracking target is sequentially compared, and a search is made for a start point whose position difference is within a specified value. At step 112, the presence or absence of the corresponding start point is determined. In some cases, the expected arrival time is calculated from the time required to reach the next fixed point set along the approach course where the start fixed point is set, for example, in the case of FIG. Step 113 and subsequent steps are executed.

[0004] The required time described above is set in advance according to each fixed point interval and the speed of the approaching aircraft passing through each fixed point, and the approaching speed of the approaching aircraft is almost constant near these fixed points. Can be calculated. An example of the required time shown in FIG. 8 is the content in units of seconds set corresponding to the fixed point shown in FIG. FIG. 8 shows the position information of each start fixed point and the next fixed point in polar coordinates (range, theta) centered on the position of the secondary monitoring radar.

[0005] Japanese Patent Application Laid-Open No. 3-92785 discloses that
A technique is disclosed which includes the configuration shown in FIG. 10 and automatically calculates a more accurate arrival time including a landing determination using both the secondary monitoring radar and the precision approaching radar. Further, Japanese Patent Application Laid-Open No. Hei 6-270899 discloses a mode in which the arrival of an aircraft at a predetermined spot after landing is detected by a CCD camera and the arrival time is automatically calculated, provided with the configuration shown in FIG. .

[0006]

The above-described devices have the following problems. That is, (a) In the case of the device disclosed in Japanese Patent Application Laid-Open No. 2-293682, the aircraft does not necessarily land at the first approach,
In case of entry failure, re-entry is repeated.
The apparatus disclosed in Japanese Patent No. 3682 lacks means for evaluating the success or failure of the final approach, and lacks means for evaluating whether the aircraft has actually landed at the automatically calculated predicted arrival time. However, there is a problem that the arrival time is automatically calculated as if the vehicle has landed, even though the aircraft has not landed, so the wrong arrival time is reported to the air traffic control agency or airline.

(B) In the case of the apparatus disclosed in JP-A-3-92785 The apparatus disclosed in JP-A-3-92785 requires both a secondary surveillance radar and a precise measurement approach radar. There is a problem that it cannot be used at airports equipped with only secondary surveillance radar.

(C) In the case of the device disclosed in JP-A-6-270899 The device disclosed in JP-A-6-270899 does not aim to calculate the landing time, but calculates the arrival time at the spot. For this purpose, there is a problem that the automatically calculated arrival time is later than the actual arrival time (landing time).

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and can reduce the transmission of an erroneous arrival time due to an aircraft entry failure. It is an object of the present invention to provide an arrival time calculation device capable of automatically calculating time and reporting the arrival time information to another system at the same time as the arrival time (landing time).

[0010]

In order to achieve the above object, according to the first aspect of the present invention, the arrival time at which the success or failure of the final intrusion of the aircraft is detected and the arrival time is transmitted only when the intrusion is successful. Calculator , intrusion during final intrusion
Reentry after a certain period of time for aircraft detected as failed
Detect if you have entered a flight and enter a re-entry flight
If not, consider arrival and send arrival time
Characterized in that that.

According to the present invention, the success or failure of the final approach of the aircraft is detected, and the arrival time is transmitted only when the approach is successful. Therefore, the transmission of an erroneous arrival time due to the failure of the aircraft to enter is reduced. In addition to this, the arrival time can be automatically calculated based on the aircraft position information obtained only from the secondary monitoring radar,
Moreover, the arrival time information can be reported to another system at the same time as the arrival time (landing time).

[0012]

An embodiment of the present invention will be described below with reference to the drawings. (1) Outline of the Invention The outline of the present invention will be described with reference to FIG. In FIG. 1, the secondary monitoring radar 601 is installed near the runway 602. The tracking prohibited area ATP is set as a three-dimensional space, for example, as a cylindrical area centered on the secondary monitoring radar 601 and having a certain radius and a certain altitude. The tracking prohibited area ATP includes the runway, the taxiway, and the apron, and is set to prevent the start of tracking of the aircraft during taxiing and to determine the success or failure of the final approach. The approach left limit ALB is the approach left limit defined for the runway 602.

[0013] The approach right limit ARB is the approach right limit defined for the runway 602. The arrival time calculation area AATA is set so as to cover the approach road as a three-dimensional space having a certain range from the boundary of the tracking prohibited area ATP and to cover as little as possible other than the approach road. The track Tn is the current position of the aircraft obtained by the latest scanning and tracking processing, and is a predicted track Tn +
1 is the next position of the aircraft predicted by the latest scan and tracking processing. Track Tn-1 is the position of the aircraft one scan before the track Tn, track Tn-2 is the position of the aircraft one scan before the track Tn-1,
Track Tn-3 is the position of the aircraft one scan before track Tn-2, and track Tn-4 is track Tn.
-3 is the position of the aircraft one scan before. The estimated landing position PTD is an estimated landing position of the aircraft. The estimated flight time tEFT is calculated based on the estimated landing position PT of the aircraft from the track Tn.
Estimated time to fly to D.

Here, an example of the above-described track and processing will be described with reference to FIG. The track Tn is in the arrival time calculation area AATA and the expected track Tn
If +1 is within the tracking prohibited area ATP, it is determined that the landing approach of the aircraft has been successful. If the entry is determined to be successful, the estimated time of flight tEFT is added to the current time on the track Tn to calculate and store the arrival time. The stored arrival time data is sent to another system when the current time becomes equal to the arrival time. Next, FIG. 3 is a processing list for explaining the characteristic operation of the present invention. According to this table, it is determined whether the track Tn at the current time tn is in the arrival time calculation area AATA and whether the track Tn + 1 at the current time tn is in the tracking prohibited area ATP. The calculation of time and the availability of transmission are determined.

(2) Configuration Next, a main configuration of the arrival time calculation device according to the embodiment will be described with reference to FIG. In FIG. 2, a control unit 1006 controls transmission and reception of data among all other processing units, storage units, and input / output devices via a bus 1007. The time generator 1002 provides the current time to the entire apparatus including the secondary monitoring radar 1001. The arrival time calculation area, the tracking prohibited area, the estimated flight time, and the hold time are calculated using the input device 1009 via the bus 1007 via the arrival time calculation area data storage unit 1012, the tracking prohibited area data storage unit 1013, and the estimated flight time. Data storage unit 1014,
And is stored in advance in the hold time data storage unit 1015.

The flight plan including the flight number and the beacon code is input to the flight plan data storage unit 1011 via the bus 1007 using the flight plan input unit 1005 and stored. The secondary surveillance radar 1001 uses the tracking processing unit 100 to plot the aircraft plot and beacon code captured for each scan.
Send to 3. The tracking processing unit 1003 calculates a track and an expected track in the latest scan of the aircraft based on the plot obtained from the secondary monitoring radar 1001, and inputs the calculated track and the predicted data to the tracking data storage unit 1010 via the bus 1007.

The tracking processing unit 1003 stops the tracking processing for the target from the next scan in which the predicted track enters the tracking prohibited area, and thereafter stops the tracking processing while the plot of the target is in the tracking prohibited area. I do. The area search processing unit 1017 determines whether the input current track is within the arrival time calculation area or not.
Search the data stored in 12. The area search processing unit 1017 determines whether the input predicted track is within the tracking prohibited area or not.
Search for data stored in.

(3) Operation Next, the operation of the arrival time calculation device having the above configuration will be described with reference to FIG. First, when the calculation routine shown in FIG. 5 is executed for each scan, step 901 is first performed.
Then, the current track of the tracking target whose position has been updated is input, and in the subsequent step 902, an arrival time calculation area matching the input current track is searched. If there is a matching area in this search processing, the result of the determination in step 903 becomes "true", and the flow advances to step 904 to input the predicted track of the updated tracking target. After this,
Proceeding to step 905, a search is made to determine whether the predicted track matches the tracking prohibited area.

If the current track is in the arrival time calculation area and the predicted track is not in the tracking prohibited area, the calculation routine is completed without any processing, and step 901 is started in accordance with the next scan. I do. Also, when the current track is not in the arrival time calculation area and the predicted track is not in the tracking prohibited area, the routine is completed without doing anything. On the other hand, when the current track is in the arrival time calculation area and the predicted track is in the tracking prohibited area (when the determination in step 906 is true), first, the estimation corresponding to the arrival time calculation area that matches the current track The arrival time is calculated by adding the flight time to the current time (step 90).
7). Next, at step 908, the calculated arrival time is stored as data. Then, step 90
In steps 9 and 910, the stored arrival times are compared until they match with the current time. If they match, the process proceeds to step 911, where the arrival time data is transmitted to another system, and then the process proceeds to step 912, where the data is stored. This routine is completed by deleting the data of the arrival time.

By the way, when the current track is not in the arrival time calculation area and the predicted track is in the tracking prohibited area (when the judgment in step 915 is true), the final approach has not been successful but the landing is performed as it is. Since it can be considered, it is processed as follows. First, step 916
Then, the average estimated flight time is added to the current time to calculate the arrival time. Here, the average estimated flight time is, when two or more arrival time calculation areas are set, a value obtained by adding all the estimated flight times corresponding to the plurality of arrival time calculation areas by the number of arrival time calculation areas. It is the divided value. The reason for using the average estimated flight time is that the current track is not in any of the arrival time calculation areas.

Next, at step 917, the calculated arrival time is stored as data.
Then, after the data confirmation time is calculated by adding the hold time to the current time, the process proceeds to step 919, and the calculated data confirmation time is stored as data. After this, step 920,
In step 921, comparison is performed until the stored data confirmation time matches the current time.
To search whether the target matches the tracking target machine at the current time.

If the target matches the tracking target aircraft (the determination in step 923 is true), the target is in the re-entry flight state, so the process proceeds to step 912, where the arrival time and data storage time of the target are determined. Erase the data and complete the process. On the other hand, if it does not match the tracking target aircraft (if the determination in step 923 is false), the target has landed, so the process proceeds to step 911, and after sending the arrival time data of the target to another system, Proceeding to step 912, the data of the target arrival time and the data storage time are deleted, and the process is completed.

The calculation of the arrival time in the above steps 907 and 916 will be described with reference to FIG. The data of the estimated flight time corresponding to the arrival time calculation area where the current track matches is read from the estimated flight time data storage unit 1014, and the time addition unit 1018 is read.
Send to Also, the current time of the current track is read from the tracking data storage unit 1010 and sent to the time addition unit 1018. The time addition unit 1018 adds the transmitted estimated flight time and the current time to obtain an arrival time. If the current track does not match any of the arrival time calculation areas, the data of the average estimated flight time is read from the estimated flight time data storage unit 1014 and sent to the time addition unit 1018.

Next, the storage of the arrival time performed in steps 908 and 917 is performed as follows. This is achieved by reading the arrival time data obtained by the time addition unit 1018, sending the data to the arrival time data storage unit 1019, and storing the data there. The comparison between the arrival time and the current time (steps 909 and 910) is performed as follows. That is, the arrival time data is stored in the arrival time data storage unit 101.
9 to the reading time comparison unit 1020. Further, the data at the current time is read from the time generator 1002 and sent to the time comparator 1020. The time comparison unit 1020 compares the received arrival time with the current time to determine whether the two coincide with each other.

Calculation of data confirmation time (step 918)
Is performed as follows. That is, the data of the holding time is read from the holding time data storage unit 1015 and the time addition unit 10
Send to 18. Also, the current time of the current track is read from the tracking data storage unit 1010 and sent to the time addition unit 1018. The time adding unit 1018 adds the sent hold time and the current time to obtain a data confirmation time. The storage of the data confirmation time (step 919) is achieved by reading the data of the data confirmation time obtained by the time addition unit 1018, sending the data to the data confirmation time data storage unit 1021, and storing it there.

The comparison between the data confirmation time and the current time (steps 920 and 921) is performed as follows. That is, the data of the data confirmation time is stored in the data confirmation time data storage unit 10.
21 to the reading time comparison unit 1020. Further, the data at the current time is read from the time generator 1002 and sent to the time comparator 1020. The time comparison unit 1020 compares the transmitted data confirmation time with the current time to determine whether the two coincide with each other. The search (steps 922 and 923) to determine whether the target matches the tracking target device at the current time is achieved by searching data stored in the tracking data storage unit 1010.

The transmission of the arrival time data to the other system (step 911) is performed as follows. That is, data of the arrival time is read from the arrival time data storage unit 1019 and sent to the output device 1022. The data of the flight plan of the target is read from the flight plan data storage unit 1011 and sent to the output device 1022. The target and the flight plan are linked by the tracking target identification processing unit 1016 using the beacon code as a keyword. The output device 1022 sends the received arrival time and flight plan to another system as one set of data. Deletion of the data of the arrival time and the data confirmation time of the target (step 912)
This is achieved by deleting the data stored in the arrival time data storage unit 1019 and the data confirmation time data storage unit 1021.

As described above, according to the present invention, a tracking prohibited area and an arrival time calculation area adjacent thereto are provided.
The success or failure of the approach of the aircraft is determined based on whether or not the aircraft has passed through both areas, and the arrival time is sent only when the approach is successful. Transmission can be reduced, which reduces the need for controllers to correct the data.
It also makes it possible to reduce the load on the controller. In addition, since a precise measurement approach radar is not required, the present invention can be applied to an airport having only a secondary monitoring radar. Further, the arrival time is calculated and stored when passing through the arrival time calculation area, and the arrival time data is transmitted when the current time becomes equal to the arrival time. Landing time)
At the same time, the arrival time information can be provided to another system.

It should be noted that the gist of the present invention is not limited to the above-described embodiment, but is applicable to, for example, the embodiment shown in FIG. That is, in the embodiment shown in FIG. 6, there are two runways, namely, runway A (1101) and runway B (11).
02), arrival time calculation areas are set at both ends. Arrival time calculation area AATA-1 is estimated flight time t
EFT-1 and arrival time calculation area AATA-2 have estimated flight time tEFT-2 and arrival time calculation area AA
TA-3 has an estimated flight time tEFT-3, and the arrival time calculation area AATA-4 has an estimated flight time tEFT-4. Average estimated flight time tEFT-A in this embodiment
VR is ｛(tEFT-1) + (tEFT-2) + (tEFT
FT-3) + (tEFT-4)｝ / 4.

[0030]

According to the present invention, since the success / failure of the final approach of the aircraft is detected and the arrival time is transmitted only when the approach is successful, the incorrect arrival time due to the failure of the aircraft to enter is obtained. Transmission can be reduced, the arrival time can be automatically calculated based on the aircraft position information obtained only from the secondary surveillance radar, and the arrival time information is reported to other systems at the same time as the arrival time (landing time). Can be.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining an outline of the present invention.

FIG. 2 is a diagram illustrating an example of a track and a process.

FIG. 3 is a diagram showing a processing list in the present invention.

FIG. 4 is a block diagram illustrating a configuration of an arrival time calculation device according to the embodiment.

FIG. 5 is a flowchart showing the operation of the arrival time calculation device.

FIG. 6 is a diagram for explaining another embodiment.

FIG. 7 is a flowchart illustrating an example of a conventional arrival time calculation method.

FIG. 8 is a diagram showing an example of stored contents of fixed point information.

FIG. 9 is a diagram showing an example of a fixed point and an approach course.

FIG. 10 is a block diagram illustrating an example of a conventional arrival time calculation device.

FIG. 11 is a block diagram illustrating an example of a conventional arrival time calculation device.

[Explanation of symbols]

ATP Tracking prohibited area AATA Arrival time calculation area ALB Approach left limit ARB Approach right limit PTD Estimated landing position Tn Track in latest scan (current time track) Tn + 1 Expected track in latest scan Tn-1 Track before 1 scan Tn-2 Track before 2 scans Tn-3 Track before 3 scans Tn-4 Track before 4 scans tEFT Estimated flight time 1001 Secondary monitoring radar 1002 Time generator 1003 Tracking processor 1004 Input of flight number, beacon code, etc. 1005 Flight plan input unit 1006 Control unit 1007 Bus 1008 Input of arrival time calculation area etc. 1009 Input device 1010 Tracking data storage unit 1011 Flight plan data storage unit 1012 Arrival time calculation area data Unit 1013 Tracking prohibited area data storage unit 1014 Estimated flight time data storage unit 1015 Reservation time data storage unit 1016 Tracking target identification processing unit 1017 Area search processing unit 1018 Time addition unit 1019 Arrival time data storage unit 1020 Time comparison unit 1021 Data confirmation time Data storage unit 1022 Output device 1023 Arrival time data transmission

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) G01S ⁷ /00-7/42 G01S 13/00-13/95 G08G 5/02

Claims (1)

(57) [Claims] 1. A detects the success or failure of the last entry of the aircraft, an arrival time calculation apparatus for delivering an arrival time only when the intrusion success, in the final penetration for aircraft that have been detected and intrusion failure,
After a certain period of time, it detects whether it has entered a re-entry flight,
If you are not in a re-entry flight, consider it to have landed
An arrival time calculating device for sending an arrival time.