CN111457901A - Sea wave height detection method, device, equipment and storage medium - Google Patents
Sea wave height detection method, device, equipment and storage medium Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C13/00—Surveying specially adapted to open water, e.g. sea, lake, river or canal
- G01C13/002—Measuring the movement of open water
- G01C13/004—Measuring the movement of open water vertical movement
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
- G01S13/08—Systems for measuring distance only
- G01S13/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
- G01S13/36—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated with phase comparison between the received signal and the contemporaneously transmitted signal
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Abstract
The invention discloses a method, a device, equipment and a storage medium for detecting the height of sea waves. A method of detecting the height of a sea wave, comprising: receiving a first echo signal returned by a transmitting source from a point to be measured at a first position, and simultaneously receiving a second echo signal returned by the transmitting source from the point to be measured at a second position; determining a phase difference of the first echo signal and the second echo signal; and confirming the height of the point to be measured according to the phase difference, the distance between the second position and the point to be measured and the first position parameter. The problem of the height measurement accuracy of sea wave poor is solved, the accuracy and the stability of the height measurement of the sea wave are improved, and the use efficiency of the ocean remote sensing measuring equipment is further improved.
Description
Technical Field
The embodiment of the invention relates to a detection technology of sea wave height, in particular to a method, a device, equipment and a storage medium for detecting the sea wave height.
Background
The waves are key marine environmental factors influencing the navigation safety and the operational efficiency performance of surface ships. The traditional wave measurement system adopts fixed point type, single point type and single sight line observation, can only observe the sea wave in a certain area, a certain position point or a certain direction, has single observation dimension, generally adopts an indirect measurement mode (not directly measuring the sea wave), needs to invert parameters such as wave height, wave speed and wave direction of the sea wave through other elements and by utilizing the corresponding relation of the other elements, and has more uncertain factors in the corresponding relation among the elements. In addition, the wave measuring system generally adopts an optical measurement mode, the use environment is greatly influenced by day time and meteorological factors, and particularly the efficiency and the precision of the wave measuring system are seriously influenced when the offshore environment is severe, so that the detection means at night and in fog areas are limited.
Disclosure of Invention
The invention provides a method, a device, equipment and a storage medium for detecting the height of sea waves, which aim to improve the accuracy and stability of the detection of the height of the sea waves.
In a first aspect, an embodiment of the present invention provides a method for detecting a height of a sea wave, including:
receiving a first echo signal returned by a transmitting source from a point to be measured at a first position, and simultaneously receiving a second echo signal returned by the transmitting source from the point to be measured at a second position;
determining a phase difference of the first echo signal and the second echo signal;
and confirming the height of the point to be measured according to the phase difference, the distance between the second position and the point to be measured and the first position parameter.
Optionally, the determining the phase difference between the first echo signal and the second echo signal further includes:
the first echo signal and the second echo signal are passed through a preset filter to obtain a first filtered signal and a second filtered signal;
and determining the phase difference of the first echo signal and the second echo signal according to the first filtering signal and the second filtering signal.
Optionally, before receiving, at a first location, a first echo signal returned from a point to be measured by a transmission source, and simultaneously receiving, at a second location, a second echo signal returned from the point to be measured by the transmission source, the method further includes:
and sending a radio detection signal to the point to be detected through a transmission source at the third position.
Optionally, the first position, the second position and the third position are located in the same straight line.
Optionally, the first location parameter includes: the height of the first position relative to the sea level, and the distance between the first position and the second position; the second location parameters include: the second position is relative to the height of the sea level, the distance between the second position and the first position, and the included angle between the connecting line of the first position and the second connecting position and the sea level.
Optionally, before determining the height of the point to be measured according to the phase difference, the distance between the second position and the point to be measured, the first position parameter, and the second position parameter, the method includes:
and acquiring the distance between the second position and the point to be measured by using a distance measuring instrument.
In a third aspect, an embodiment of the present invention further provides a device for detecting a height of sea waves, including:
the receiving module is used for receiving a first echo signal and a second echo signal through a first receiving antenna and a second receiving antenna respectively, and the first echo signal and the second echo signal are from the same point to be measured on the sea surface.
And the data processing module is used for determining the phase difference between the first echo signal and the second echo signal and confirming the height of the point to be measured according to the phase difference, the distance between the second position and the point to be measured and the first position parameter.
In a third aspect, an embodiment of the present invention further provides a device for detecting the height of a sea wave, where the device for detecting the height of a sea wave includes:
one or more processors;
a storage device for storing one or more programs,
when executed by the one or more processors, cause the one or more processors to implement any of the above-described methods for sea height detection.
Optionally, the apparatus further includes:
the antenna comprises a first receiving antenna arranged at a first position, a second receiving antenna arranged at a second position and a transmitting source arranged at a third position, wherein the first position, the second position and the third position are positioned in the same straight line.
In a fourth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement any one of the methods for detecting the height of a sea wave described above.
The technical scheme of the invention includes that a first echo signal returned by an emission source from a point to be measured is received at a first position, and a second echo signal returned by the emission source from the point to be measured is received at a second position; determining a phase difference of the first echo signal and the second echo signal; and confirming the height of the point to be measured according to the phase difference, the distance between the second position and the point to be measured and the first position parameter. The problem of the height measurement accuracy of sea wave poor is solved, the accuracy and the stability of the height measurement of the sea wave are improved, and the use efficiency of the ocean remote sensing measuring equipment is further improved.
Drawings
The foregoing and other features and advantages of embodiments of the present invention will become more apparent to those of ordinary skill in the art to which the present invention pertains by describing in detail exemplary embodiments thereof with reference to the attached drawings, wherein:
fig. 1 is a flow chart of a method for detecting the height of sea waves according to a first embodiment of the present invention;
FIG. 2 is a schematic view of a wave detection apparatus according to a first embodiment of the invention;
fig. 3 is a flowchart of a method for detecting the height of sea waves according to a second embodiment of the present invention;
FIG. 4 is a schematic view of a wave detection apparatus according to a second embodiment of the present invention;
fig. 5 is a schematic view of a sea height detection device according to a third embodiment of the present invention;
fig. 6 is a schematic view of a wave detection device according to a fourth embodiment of the present invention.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and not restrictive thereof. It should also be noted that the described embodiments are only some embodiments, not all embodiments, of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Furthermore, the terms "first," "second," and the like may be used herein to describe various orientations, actions, steps, elements, or the like, but the orientations, actions, steps, or elements are not limited by these terms. These terms are only used to distinguish one direction, action, step or element from another direction, action, step or element. For example, the second echo signal may be referred to as a second echo signal, and similarly, the second echo signal may be referred to as a second echo signal, without departing from the scope of the present invention. The second echo signal and the second echo signal are both echo signals, but are not the same echo signal. The terms "first", "second", etc. are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the steps as a sequential process, many of the steps can be performed in parallel, concurrently or simultaneously. In addition, the order of the steps may be rearranged. A process may be terminated when its operations are completed, but may have additional steps not included in the figure. A process may correspond to a method, a function, a procedure, a subroutine, a subprogram, etc.
Example one
Fig. 1 is a flowchart of a method for detecting a height of sea waves according to an embodiment of the present invention, which specifically includes the following steps:
in this embodiment, and with reference to fig. 2, the wave detection apparatus comprises a first receiving antenna disposed at a first location 41 and a second receiving antenna disposed at a second location 42. When the point to be measured 43 on the sea wave receives the detection signal emitted by the emission source, the detection signal is reflected to generate an echo signal. The sea wave detection device of the embodiment can be a large ship, a maritime patrol airplane and the like.
In this embodiment, the wave detection device receives a first echo signal from a first receiving space at a first location and receives a second echo signal from a second receiving space at a second location.
in this embodiment, the phase difference between the first echo signal and the second echo signal may be determined according to a waveform function of the first echo signal and a waveform function of the second echo signal.
And step 130, confirming the height of the point to be measured according to the phase difference, the distance between the second position and the point to be measured and the first position parameter.
In this embodiment, before confirming the height of the point to be measured according to the phase difference, the distance between the second position and the point to be measured, the first position parameter, and the second position parameter, the method includes: the distance between the second position and the point to be measured is obtained by using a distance measuring instrument, which can be a photoelectric distance measuring instrument and an acoustic wave distance measuring instrument. In other embodiments, the distance between the second position and the point to be measured may be obtained in other manners, which is not limited in this embodiment.
In this embodiment, referring to fig. 2, the first position parameters include a height of the first position 41 relative to the sea level 40 and a distance between the first position 41 and the second position 42, and the second position parameters include a height H of the second position 42 relative to the sea level 40, a distance between the second position 42 and the first position 41, and an included angle β between a connecting line between the first position 41 and the second position 42 and the sea level.
In the present embodiment, for example, the sea height can be obtained by the following formula
H is the height of the sea wave of the point to be measured, H is the height of the second position relative to the sea level, B is the length of the first receiving antenna and the second receiving antenna, β is the included angle between the connecting line of the first position and the second connecting position and the sea level, and R is the height of the sea wave of the point to be measured2Is the distance between the second location 42 and the point to be measured, phi is the phase difference between the first echo signal and the second echo signal.
According to the technical scheme of the embodiment, a first echo signal returned by a transmitting source from a point to be measured is received at a first position, and a second echo signal returned by the transmitting source from the point to be measured is received at a second position; determining a phase difference of the first echo signal and the second echo signal; and confirming the height of the point to be measured according to the phase difference, the distance between the second position and the point to be measured and the first position parameter. The problem of the height measurement accuracy of sea wave poor is solved, the accuracy and the stability of the height measurement of the sea wave are improved, and the use efficiency of the ocean remote sensing measuring equipment is further improved.
Example two
Fig. 3 is a flowchart of a method for detecting the height of sea waves according to a second embodiment of the present invention, which specifically includes the following steps:
in this embodiment, referring to fig. 4, a wave detection apparatus includes a first receiving antenna disposed at a first location 41, a second receiving antenna disposed at a second location 42, and a source of emission disposed at a third location 44. The first position 41, the second position 42 and the third position 44 are located in the same straight line, and the third position 44 is located at the center of the connecting line of the first position 41 and the second position 42. Specifically, the emission source at the third position emits a radio detection signal to the point to be measured on the sea wave.
in this embodiment, when a detection signal transmitted by an emission source is received by a point to be detected on a sea wave, the detection signal is reflected to generate an echo signal, and the sea wave detection device receives a first echo signal from a first receiving place at a first position and receives a second echo signal from a second receiving place at a second position.
in this embodiment, the preset filter is a matched filter, and the first echo signal and the second echo signal pass through the filter to reduce clutter interference, thereby improving the accuracy of the echo signals, and enabling the first filtered signal and the second filtered signal to be more convenient for acquiring the phase difference between the first echo signal and the second echo signal. The acquired phase difference can be more accurate.
in this embodiment, the waveform function of the first filtered signal is multiplied by the waveform function of the conjugate signal of the second first filtered signal to obtain an objective function, and the phase difference between the first echo signal and the second echo signal is determined by determining the phase difference between the objective function and the objective function.
And step 250, confirming the height of the point to be measured according to the phase difference, the distance between the second position and the point to be measured and the first position parameter.
In this embodiment, before confirming the height of the point to be measured according to the phase difference, the distance between the second position and the point to be measured, the first position parameter, and the second position parameter, the method includes: the distance between the second position and the point to be measured is obtained by using a distance measuring instrument, which can be a photoelectric distance measuring instrument and an acoustic wave distance measuring instrument. In other embodiments, the distance between the second position and the point to be measured may be obtained in other manners, which is not limited in this embodiment.
In this embodiment, referring to fig. 4, the first position parameters include a height of the first position 41 relative to the sea level 40 and a distance between the first position 41 and the second position 42, and the second position parameters include a height H of the second position 42 relative to the sea level 40, a distance between the second position 42 and the first position 41, and an included angle β between a connecting line between the first position 41 and the second position 42 and the sea level.
In the present embodiment, for example, the sea height can be obtained by the following formula
H is the height of the sea wave at the point to be measured, H is the height of the second position relative to the sea level, B is the length of the first receiving antenna and the second receiving antenna, βThe angle between the line of the second connection position and the sea level, R2And phi is the distance between the second position and the point to be measured, and phi is the phase difference between the first echo signal and the second echo signal.
According to the technical scheme of the embodiment, a first echo signal returned by a transmitting source from a point to be measured is received at a first position, and a second echo signal returned by the transmitting source from the point to be measured is received at a second position; determining a phase difference of the first echo signal and the second echo signal; and confirming the height of the point to be measured according to the phase difference, the distance between the second position and the point to be measured and the first position parameter. The problem of the height measurement accuracy of sea wave poor is solved, the accuracy and the stability of the height measurement of the sea wave are improved, and the use efficiency of the ocean remote sensing measuring equipment is further improved.
EXAMPLE III
Fig. 5 is a diagram illustrating a sea height detection device provided in an embodiment of the present invention, which can execute a sea height detection method provided in any embodiment of the present invention, specifically, the sea height detection device 3 includes:
the receiving module 31 is configured to receive a first echo signal and a second echo signal through a first receiving antenna and a second receiving antenna, where the first echo signal and the second echo signal are derived from the same point to be measured on the sea surface.
The data processing module 32 is configured to determine a phase difference between the first echo signal and the second echo signal, and determine the height of the point to be measured according to the phase difference, the distance between the second position and the point to be measured, and the first position parameter;
in this embodiment, the first location parameter includes: the height of the first position relative to the sea level, and the distance between the first position and the second position; the second location parameters include: the second position is relative to the height of the sea level, the distance between the second position and the first position, and the included angle between the connecting line of the first position and the second connecting position and the sea level.
In an alternative embodiment, the data processing module is further configured to pass the first echo signal and the second echo signal through a preset filter to obtain a first filtered signal and a second filtered signal; and determining the phase difference of the first echo signal and the second echo signal according to the first filtering signal and the second filtering signal.
In an alternative embodiment, the wave height detection device further comprises: and the transmitting module is used for transmitting a radio detection signal to the point to be detected through the transmitting source at the third position.
In this alternative embodiment, the first position, the second position and the third position are located in the same straight line.
In an alternative embodiment, the wave height detection device further comprises: and the distance measuring module is used for acquiring the distance between the second position and the point to be measured by adopting a distance measuring instrument.
The sea wave height detection device provided by the embodiment of the invention can execute the sea wave height detection method provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method.
Example four
Fig. 6 is a schematic structural diagram of a wave height detection device according to a fourth embodiment of the present invention, and as shown in fig. 6, the wave height detection device includes a processor 51 and a memory 52; the number of the processors 51 in the sea wave height detection device can be one or more, and one processor 51 is taken as an example in fig. 6; the processor 51 and the memory 52 in the sea wave height detection device can be connected by a bus or other means, and the bus connection is taken as an example in fig. 6.
The memory 52 is a computer-readable storage medium, and can be used for storing software programs, computer-executable programs, and modules, such as program instructions/modules (e.g., a receiving module and a data processing module) corresponding to the sea height detection method in the embodiment of the present invention. The processor 51 executes various functional applications and data processing of the wave height detection device by running software programs, instructions and modules stored in the memory 52, so as to realize the above-mentioned wave height detection method.
The memory 52 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the memory 52 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the memory 52 may further include a memory remotely located with respect to the processor 51, which may be connected to a sea wave height detection device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
In an alternative embodiment, the apparatus further comprises: the antenna comprises a first receiving antenna arranged at a first position, a second receiving antenna arranged at a second position and a transmitting source arranged at a third position, wherein the first position, the second position and the third position are positioned in the same straight line. Specifically, the first receiving antenna, the second receiving antenna and the transmitting source are connected with the processor and/or the memory through the bus.
EXAMPLE six
An embodiment of the present invention further provides a storage medium containing computer-executable instructions, which when executed by a computer processor, perform a method for detecting a height of sea waves, the method including:
receiving a first echo signal returned by a transmitting source from a point to be measured at a first position, and simultaneously receiving a second echo signal returned by the transmitting source from the point to be measured at a second position;
determining a phase difference of the first echo signal and the second echo signal;
and confirming the height of the point to be measured according to the phase difference, the distance between the second position and the point to be measured and the first position parameter.
Of course, the embodiment of the present invention provides a storage medium containing computer-executable instructions, where the computer-executable instructions are not limited to the operations of the method described above, and may also perform related operations in the method for detecting the height of a sea wave provided by any embodiment of the present invention.
Based on the understanding that the technical solutions of the present invention can be embodied in the form of software products, such as floppy disks, Read-Only memories (ROMs), Random Access Memories (RAMs), flash memories (F L ASHs), hard disks or optical disks of a computer, etc., and include instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods according to the embodiments of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A method of detecting the height of a sea wave, comprising:
receiving a first echo signal returned by a transmitting source from a point to be measured at a first position, and simultaneously receiving a second echo signal returned by the transmitting source from the point to be measured at a second position;
determining a phase difference of the first echo signal and the second echo signal;
and confirming the height of the point to be measured according to the phase difference, the distance between the second position and the point to be measured and the first position parameter.
2. A method of detecting sea wave height as set forth in claim 1, wherein said determining a phase difference of the first echo signal and the second echo signal further comprises:
the first echo signal and the second echo signal are passed through a preset filter to obtain a first filtered signal and a second filtered signal;
and determining the phase difference of the first echo signal and the second echo signal according to the first filtering signal and the second filtering signal.
3. A method of detecting the height of an ocean wave according to claim 1 wherein, before receiving a first echo signal from a source returning from a point to be measured at a first location and receiving a second echo signal from the source returning from the point to be measured at a second location, the method further comprises:
and sending a radio detection signal to the point to be detected through a transmission source at the third position.
4. A method of detecting the height of an ocean wave according to claim 3 wherein the first, second and third positions are located in the same line.
5. A method of detecting the height of an ocean wave according to claim 1 wherein the first position parameter comprises: the height of the first position relative to the sea level, and the distance between the first position and the second position; the second location parameters include: the second position is relative to the height of the sea level, the distance between the second position and the first position, and the included angle between the connecting line of the first position and the second connecting position and the sea level.
6. A method for detecting the height of an ocean wave according to claim 1, wherein before confirming the height of the point to be measured according to the phase difference, the distance between the second position and the point to be measured, the first position parameter and the second position parameter, the method comprises the following steps:
and acquiring the distance between the second position and the point to be measured by using a distance measuring instrument.
7. A device for detecting the height of sea waves, comprising:
the receiving module is used for respectively receiving a first echo signal and a second echo signal through a first receiving antenna and a second receiving antenna, and the first echo signal and the second echo signal are from the same point to be measured on the sea surface;
and the data processing module is used for determining the phase difference between the first echo signal and the second echo signal and confirming the height of the point to be measured according to the phase difference, the distance between the second position and the point to be measured and the first position parameter.
8. A sea height detection apparatus, comprising:
one or more processors;
a storage device for storing one or more programs,
when executed by the one or more processors, cause the one or more processors to implement a method of sea height detection as claimed in any one of claims 1-6.
9. An apparatus for detecting the height of an ocean wave according to claim 8 wherein the apparatus further comprises:
the antenna comprises a first receiving antenna arranged at a first position, a second receiving antenna arranged at a second position and a transmitting source arranged at a third position, wherein the first position, the second position and the third position are positioned in the same straight line.
10. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out a method for sea height detection according to any one of claims 1 to 6.
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| CN107678025A (en) * | 2017-08-01 | 2018-02-09 | 北京海兰信数据科技股份有限公司 | Sea wave height computational methods and device, storage medium and processor |
| CN108802724A (en) * | 2018-06-28 | 2018-11-13 | 北京豪恩科技有限责任公司 | A method of test wave heights |
| CN109116320A (en) * | 2018-07-13 | 2019-01-01 | 中国人民解放军国防科技大学 | A method for extracting characteristic parameters of ocean waves based on radar echo signals |
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2020
- 2020-03-31 CN CN202010247098.6A patent/CN111457901A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170314920A1 (en) * | 2014-11-20 | 2017-11-02 | Mitsubishi Electric Corporation | State estimation device |
| CN107678025A (en) * | 2017-08-01 | 2018-02-09 | 北京海兰信数据科技股份有限公司 | Sea wave height computational methods and device, storage medium and processor |
| CN108802724A (en) * | 2018-06-28 | 2018-11-13 | 北京豪恩科技有限责任公司 | A method of test wave heights |
| CN109116320A (en) * | 2018-07-13 | 2019-01-01 | 中国人民解放军国防科技大学 | A method for extracting characteristic parameters of ocean waves based on radar echo signals |
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