A processing method and system based on maritime radar echo splitting
A radar echo and maritime technology, used in radio wave measurement systems, instruments, etc., can solve problems such as target fusion, achieve the effect of clear echo display and avoid target fusion
Active Publication Date: 2021-04-30
BEIJING HIGHLANDER DIGITAL TECH +1
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Problems solved by technology
[0003] In order to solve the problem of target fusion when dealing with echo splitting, the object of the present invention is to provide a method and system based on maritime radar echo splitting
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[0076] A kind of optional embodiment, described method also comprises:
[0077] When the number of peaks of the target echo is greater than or equal to the number of scan lines of the target echo, after reducing the initial threshold value to obtain a reference threshold value, mark the azimuth and distance of the predicted position of the trough The position is marked as 0.
[0078] In an optional implementation manner, the initial threshold value is reduced to obtain a reference threshold value, and filtering detection is performed under the reference threshold value, including:
[0079] reducing the initial threshold by half as the reference threshold;
[0080] Filter detection is performed under the reference threshold value. According to the experimental data, when the drop value of the initial threshold value is less than half of it, all the troughs of the split target echo cannot be placed above the new detection threshold, that is, the problem of target echo splittin...
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The invention discloses a processing method and system based on maritime radar echo splitting. The method includes: setting an area threshold, comparing the area of the target with the threshold; Distance, ending azimuth and ending distance; within the range determined by the starting azimuth, ending azimuth, starting distance, and ending distance of the target, traverse the target echo scanning line and record the number of peaks and trough positions of the target echo scanning line; Compare the number of target echo scanning lines with the number of wave peaks, if the number of wave peaks is greater than or equal to the number of target echo scanning lines, determine the predicted position of the valley when the radar performs the next scan according to the position of the valley of the target echo scanning line; predict the valley The detection threshold value corresponding to the azimuth and distance of the position is used as the initial threshold value. When the preset conditions of echo splitting are met, the initial threshold value is reduced to obtain the reference threshold value, so that when the echo splits, the reference threshold value Perform filter detection.
Description
technical field [0001] The present invention relates to the technical field of radar echo processing, in particular to a processing method and system based on maritime radar echo splitting. Background technique [0002] When the maritime radar detects a large ship target, the radar reflection echo will be split, that is, one target echo is split into multiple echoes, and the phenomenon of target splitting is prone to appear after the dots are condensed. The traditional method to solve the target splitting is to connect a certain threshold when the spot is condensed, and increase the degree of echo cohesion to improve the target splitting phenomenon. However, this method is prone to the problem of target fusion, that is, two targets are fused into one target. Contents of the invention [0003] In order to solve the problem of target fusion when dealing with echo splitting, the object of the present invention is to provide a processing method and system based on maritime ra...
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IPC IPC(8): G01S7/35G01S7/41
CPCG01S7/354G01S7/414
Inventor 夏文涛王伟王晓谊杨婧苏如章房冠平周双林
Owner BEIJING HIGHLANDER DIGITAL TECH