CN114877749B - Broadband automatic water column deviation measuring method, system, equipment and computer medium - Google Patents
Broadband automatic water column deviation measuring method, system, equipment and computer medium Download PDFInfo
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- CN114877749B CN114877749B CN202210471676.3A CN202210471676A CN114877749B CN 114877749 B CN114877749 B CN 114877749B CN 202210471676 A CN202210471676 A CN 202210471676A CN 114877749 B CN114877749 B CN 114877749B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 128
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 238000005516 engineering process Methods 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims description 17
- 238000005259 measurement Methods 0.000 claims description 14
- 238000004590 computer program Methods 0.000 claims description 12
- 238000004364 calculation method Methods 0.000 claims description 2
- 238000000691 measurement method Methods 0.000 claims 2
- 238000009826 distribution Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
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- 230000002708 enhancing effect Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41G—WEAPON SIGHTS; AIMING
- F41G3/00—Aiming or laying means
- F41G3/32—Devices for testing or checking
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/70—Determining position or orientation of objects or cameras
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Abstract
The invention discloses a broadband automatic water column deviation measuring method, a system, equipment and a computer medium, which comprise the following steps: while tracking the target, arranging and limiting a plurality of water column detection wave doors in a front-rear limiting range of the target tracking wave door; scanning the water columns by adopting a broadband signal and simultaneous multi-beam technology to form a high-resolution two-dimensional image containing a plurality of water column information, and obtaining the positions and the time of a plurality of water column landing points; and comparing the obtained positions of the multiple water column landing points with the positions of the target center to obtain a deviation result between the two. The broadband automatic water column deflection measuring method provided by the invention reduces manual intervention errors and has the characteristics of high detection speed, high measuring precision of the spring water column drop point and the like.
Description
Technical Field
The invention relates to the field of radar target detection, in particular to a broadband automatic water column deflection measuring method, a system, equipment and a computer medium.
Background
The shooting correction is carried out according to the deviation of the landing point of the water column, and is a means commonly adopted by the current-generation mass caliber naval gun weapon system.
And (3) calibrating, namely measuring the relative vector deviation between the targets (the positions of the target ships) by using measuring equipment (namely the positions of water columns splashed by the shells falling into water after being ejected, so as to correct the shooting parameters of the next shell. The method is an important means for improving the shooting hit rate of the gun weapon system (for sea), and the continuous development of the novel gun brings higher requirements to the shooting correction method and also brings new challenges to the radar.
The traditional method for measuring the landing point of the elastic water column is a manual detection method: the radar antenna is fanned in a certain range of azimuth, the emission signal is generally a narrow-band signal, an operator observes through a B-type plane display, and the azimuth and distance deviation of the water column relative to the target are extracted by using a touch ball. The method is semi-automatic working time, long in reaction time and unsuitable for large-caliber gun calibration with high shooting speed.
The traditional artificial water column deviation detection method has the following defects in actual use: determining the water column echo characteristics in a manual mode, wherein the stability and the accuracy of a detection result are poor; in addition, the narrow-band signal is adopted to measure the deviation, and the accuracy is greatly affected when a plurality of water columns exist in the same distance unit because the water column echo is a composite wave of the plurality of water columns and cannot be distinguished due to the limitation of the distance resolution of the radar, namely, the output deviation is the composite wave deviation. It is difficult to adapt to the diversity of combat tasks and environmental variability in the sea and battlefield environment in the future.
The traditional manual pressure point detection method is greatly influenced by human factors, and the water column measurement precision is not easy to guarantee; meanwhile, for the conventional method adopting fixed narrow-band single pulse sequential scanning, as the water column target appears instantaneously, changes rapidly and lasts for a short time, the method is limited by a minimum distinguishable unit, the stability and the precision of a result obtained by detection are poor, and the accuracy of the deviation measurement is greatly reduced.
Disclosure of Invention
In order to solve the problems, the invention provides a broadband automatic water column deflection measuring method, which comprises the following steps:
while tracking the target, arranging and limiting a plurality of water column detection wave doors in a front-rear limiting range of the target tracking wave door;
scanning the water columns by adopting a broadband signal and simultaneous multi-beam technology to form a high-resolution two-dimensional image containing a plurality of water column information, and obtaining the positions and the time of a plurality of water column landing points;
and comparing the obtained positions of the multiple water column landing points with the positions of the target center to obtain a deviation result between the two.
Further, according to deviation results obtained from the positions of the water column drop points and the positions of the targets and the time sequence of the water column occurrence, multi-target batches are compiled, and multi-target time sequence control and parameter processing are completed.
Further, when the signal to noise ratio of the water column is lower than a threshold set value or the duration of the water column exceeds a corresponding set value, tracking is canceled.
Further, the specific calculation method of the deviation result is as follows: and comparing the deviation values between the drop point positions of the water columns and the target center position to obtain a weighted average, and obtaining a final deviation result.
Further, the front and rear limiting range of the target tracking wave gate is specifically a region with a distance deviation of-1 km to 1km and an azimuth deviation of-3 degrees to +3 degrees with the target as the center.
The system comprises a target tracking module and a signal processing module, wherein the target tracking module tracks a target and a water column according to received instructions, obtains a deviation result between the water column and the target, and sends the result to the signal processing module; the signal processing module of the system compiles multiple target batches according to the deviation result and the time sequence of the water column, and completes the control of multiple target time sequences and parameter processing; the system is implemented based on any of the methods described above.
The utility model also provides a broadband automatic water column deviator, include:
a memory for storing a computer program;
and the processor is used for realizing the steps of the broadband automatic water column deviation measuring method when executing the computer program.
There is also provided a computer medium having a computer program stored thereon, the computer program being executed by a processor to perform the steps of the wideband automatic water column polarization method of any of the above.
Compared with the prior art, the invention has the following beneficial effects:
(1) Compared with the existing narrow-band single-pulse sequential scanning, the invention can realize high-efficiency imaging of water columns at various positions and forms, enhance the measurement accuracy of the water columns, and output instantaneous measurement information such as azimuth and distance deviation of the elastic water column relative to a target (ship) in real time.
(2) The system reduces manual intervention errors, and has the characteristics of high detection speed, high measuring precision of the drop point of the elastic water column and the like; a broadband signal is adopted to replace a narrow-band pulse, so that a plurality of high-resolution range images of water column drop points can be obtained, and the range of the central water column drop point can be accurately positioned; meanwhile, the azimuth dimension adopts a simultaneous multi-beam system to replace sequential scanning, so that 'quick' measurement of water columns is realized, the characteristics of the water columns are further highlighted, and accurate calibration of the water columns for sea shooting can be completed.
(3) The method has important significance for improving the shooting accuracy of the warship gun to the sea and enhancing the fight efficiency of the warship gun system.
Drawings
Fig. 1 is a flow chart of a first embodiment of the present invention.
Fig. 2 is a diagram of an image of a water column drop point when a narrowband signal is generated according to a first embodiment of the invention.
Fig. 3 is a diagram of imaging a water column drop point in a broadband signal according to a first embodiment of the present invention.
Fig. 4 is a schematic diagram of a water column drop point distribution according to a first embodiment of the present invention.
Detailed Description
The following describes the specific embodiments of the wideband automatic water column deflection measuring method according to the present invention in detail with reference to the accompanying drawings.
Example 1
In the embodiment, an automatic water column deflection measurement technology is adopted, and the detection of a water column target is independently completed under the condition of no intervention of an operator.
The embodiment adopts a broadband multi-beam system, and realizes accurate and rapid measurement aiming at different water column drop point positions and forms. The broadband signal is adopted to obtain higher distance resolution, the distribution condition of water column landing points can be positioned under the specific condition that a plurality of water columns exist, and each water column deviation in the water limiting range is selected to obtain a statistical deviation value, so that the impact point position is accurately locked. The dense multi-beam technology is adopted in azimuth, and the superposition of the broadband signal and the multi-beam technology can form a high-resolution two-dimensional image. According to the specific position and the form of the central water column, the situation can be accurately grasped, the secondary emission state can be rapidly adjusted, and the target accurate striking can be realized.
As shown in fig. 1, the method for measuring the deflection of the broadband automatic water column according to the embodiment specifically includes the following steps:
step one: the "water column calibration" function requires input. In the sea working mode, a main cannon user selects a water column injection function according to weapon system requirements and actual combat objects and combat targets.
Step two: and setting a water column detection wave gate. After receiving the indication of 'water column measurement', the target tracking module of the system tracks the target and arranges a certain number of water column detection wave gates in a limited range around the target tracking wave gate. The front and rear limiting range of the target tracking wave gate in the embodiment is specifically a region with a distance deviation of-1 km to 1km and an azimuth deviation of-3 degrees to +3 degrees with the target as the center.
Step three: the suspicious water column is tracked. The water column can be scanned by adopting a broadband signal and simultaneous multi-beam technology to form a high-resolution two-dimensional image, the characteristics of the water column are highlighted in a refined mode, and reasonable analysis and judgment passing of suspicious water columns is realized. And in the third step, a plurality of water column drop point positions can be obtained by adopting broadband signals. The water column is not static and is likely to be displaced in azimuth or distance due to the influence of conditions such as wind speed and wind direction, so that the deviation of the drop point measurement is caused, and if the water column deviation data is output in a plurality of times, the judgment of a commander is likely to be influenced.
Fig. 2 and 3 are two-dimensional images obtained by detecting the same water column target with bandwidths of 10MHz and 1GHz, respectively, and it is obvious that when a narrowband signal (10 MHz) is adopted, a plurality of water column targets cannot distinguish specific positions and distributions, and can only be treated as a single water column target. And the specific positions and distribution of the drop points of each water column can be clearly distinguished after the broadband signal is adopted in fig. 3.
Step four: a deviation result is obtained.
Deviation values existing between the centers of the plurality of water columns and the target center may affect judgment of a commander if the water column deviation data are output in a known manner. To ensure the deviation data of radar output and the real falling point data of the projectileAnd (3) matching, namely determining a statistical average value of water column deviation data in a limited range after radar measurement is stable as an output principle, namely outputting azimuth distance deviation of each water column center relative to a target center according to the high-resolution two-dimensional image positioning ejection water column landing point position obtained in the step (III), and sending the azimuth distance deviation to a signal processing module of the system. Specifically, a central drop point range is selected according to the distribution and the density of the drop points of the water columns, as shown in fig. 4, and the deviation value R of each drop point of the water columns in a limited range from the target central position 1 ,R 2 ,…R N Taking weighted average to obtain final deviation resultAccording to deviation result->Correcting the muzzle position, wherein R 1 ,R 2 ,…R N The deviation values of the first water column drop point position, the first water column drop point position …, the Nth water column drop point position and the target center position are respectively obtained.
Step five: and correcting deviation. And a signal processing module of the system compiles multiple target batches according to the azimuth distance deviation of the target center and the water column center and the time sequence of the water column occurrence, and completes the multi-target time sequence control and parameter processing.
Step six: the tracking is withdrawn. And when the signal-to-noise ratio of the water column is lower than a threshold set value or the duration of the water column exceeds a corresponding set value, the tracking of the water column is canceled.
Example two
The embodiment provides a broadband automatic water column deviation measuring system, which is realized based on the method of the first embodiment.
The system comprises a target tracking module and a signal processing module, wherein the target tracking module tracks a target and a water column according to the received indication, obtains a deviation result between the water column and the target, and sends the result to the signal processing module; and the signal processing module of the system compiles multiple target batches according to the deviation result and the time sequence of the water column, and completes the multi-target time sequence control and parameter processing.
Example III
The embodiment provides a broadband automatic water column deviation measuring device, which comprises:
a memory for storing a computer program;
and the processor is used for realizing the steps of the broadband automatic water column deviation measuring method in the embodiment when executing the computer program.
Example IV
The present embodiment provides a computer medium, on which a computer program is stored, the computer program being executed by a processor to implement the steps of the wideband automatic water column polarization measuring method as described in the first embodiment.
Compared with the existing narrow-band single-pulse sequential scanning, the invention can realize high-efficiency imaging of water columns at various positions and forms, enhance the measurement accuracy of the water columns, and output instantaneous measurement information such as azimuth and distance deviation of the elastic water column relative to a target (ship) in real time.
The system reduces the manual intervention error and has the characteristics of high detection speed, high measuring precision of the drop point of the elastic water column and the like. The broadband signal is adopted to replace the narrowband pulse, so that a plurality of high-resolution range images of the water column drop points can be obtained, and the range of the central water column drop point can be accurately positioned. Meanwhile, the azimuth dimension adopts a simultaneous multi-beam system to replace sequential scanning, so that 'quick' measurement of water columns is realized, the characteristics of the water columns are further highlighted, and accurate calibration of the water columns for sea shooting can be completed.
The method has important significance for improving the shooting accuracy of the warship gun to the sea and enhancing the fight efficiency of the warship gun system.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (4)
1. A method for broadband automatic water column deflection measurement, comprising the following steps:
while tracking the target, arranging and limiting a plurality of water column detection wave doors in a front-rear limiting range of the target tracking wave door; the front and rear limiting range of the target tracking wave gate is specifically a region taking the target as the center, wherein the distance deviation is-1 km, and the azimuth deviation is-3 degrees to +3 degrees;
scanning the water columns by adopting a broadband signal and simultaneous multi-beam technology to form a high-resolution two-dimensional image containing a plurality of water column information, and obtaining the positions and the time of a plurality of water column landing points;
comparing the obtained positions of the water column drop points with the positions of the target center to obtain a deviation result between the positions;
according to deviation results obtained from the positions of the water column drop points and the positions of the targets and the time sequence of the water column occurrence, programming a multi-target batch to complete multi-target time sequence control and parameter processing;
when the signal-to-noise ratio of the water column is lower than a threshold set value or the duration of the water column exceeds a corresponding set value, the tracking of the water column is canceled;
the specific calculation method of the deviation result comprises the following steps: and comparing the deviation values between the drop point positions of the water columns and the target center position to obtain a weighted average, and obtaining a final deviation result.
2. The broadband automatic water column deviation measuring system is characterized by comprising a target tracking module and a signal processing module, wherein the target tracking module tracks a target and a water column according to received instructions, obtains deviation results between the water column and the target, and sends the results to the signal processing module; the signal processing module of the system compiles multiple target batches according to the deviation result and the time sequence of the water column, and completes the control of multiple target time sequences and parameter processing; the system is realized based on the method of claim 1.
3. A broadband automatic water column deflection measuring device, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the wideband automatic water column bias measurement method of claim 1 when executing a computer program.
4. A computer medium having a computer program stored thereon, the computer program being executed by a processor to perform the steps of the broadband automatic water column bias measurement method of claim 1.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0419320A1 (en) * | 1989-09-19 | 1991-03-27 | Thomson-Csf | Automatic harmonizing device for an opto-electronic system |
| CN103837862A (en) * | 2014-02-20 | 2014-06-04 | 北京理工大学 | Method for restraining grating lobes in stepped frequency SAR distance direction based on image |
| CN111487589A (en) * | 2020-04-21 | 2020-08-04 | 中国科学院上海微系统与信息技术研究所 | Target placement positioning method based on multi-source sensor network |
| CN112179210A (en) * | 2020-08-31 | 2021-01-05 | 河北汉光重工有限责任公司 | Method for correcting shot hit deviation of naval gun |
| CN112558102A (en) * | 2020-11-12 | 2021-03-26 | 北京遥测技术研究所 | Airborne oblique laser three-dimensional measurement and composite imaging system and use method thereof |
| CN113030929A (en) * | 2021-02-09 | 2021-06-25 | 清华大学 | Broadband radar signal receiving device and receiving method |
| CN113992318A (en) * | 2021-10-26 | 2022-01-28 | 西安科工电子科技有限公司 | Missile-borne data chain system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11015902B2 (en) * | 2013-05-09 | 2021-05-25 | Shooting Simulator, Llc | System and method for marksmanship training |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0419320A1 (en) * | 1989-09-19 | 1991-03-27 | Thomson-Csf | Automatic harmonizing device for an opto-electronic system |
| CN103837862A (en) * | 2014-02-20 | 2014-06-04 | 北京理工大学 | Method for restraining grating lobes in stepped frequency SAR distance direction based on image |
| CN111487589A (en) * | 2020-04-21 | 2020-08-04 | 中国科学院上海微系统与信息技术研究所 | Target placement positioning method based on multi-source sensor network |
| CN112179210A (en) * | 2020-08-31 | 2021-01-05 | 河北汉光重工有限责任公司 | Method for correcting shot hit deviation of naval gun |
| CN112558102A (en) * | 2020-11-12 | 2021-03-26 | 北京遥测技术研究所 | Airborne oblique laser three-dimensional measurement and composite imaging system and use method thereof |
| CN113030929A (en) * | 2021-02-09 | 2021-06-25 | 清华大学 | Broadband radar signal receiving device and receiving method |
| CN113992318A (en) * | 2021-10-26 | 2022-01-28 | 西安科工电子科技有限公司 | Missile-borne data chain system |
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