Echo splitting processing method and system based on maritime radar
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: 2021-02-02
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 valley 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 an echo splitting processing method and system based on a maritime radar, and the method comprises the steps: setting an area threshold, and comparing the area of a target withthe threshold; according to the obtained radar scanning data, determining a starting direction, a starting distance, a termination direction and a termination distance of the target; traversing the target echo scanning line in a range determined by the starting orientation, the ending orientation, the starting distance and the ending distance of the target, and recording the wave crest number andthe wave trough position of the target echo scanning line; comparing the number of the target echo scanning lines with the number of the wave crests, and if the number of the wave crests is greater than or equal to the number of the target echo scanning lines, determining a wave trough prediction position when the radar performs the next circle of scanning according to the wave trough position ofthe target echo scanning lines; and taking the detection threshold values corresponding to the orientation and the distance of the trough prediction position as initial threshold values, and reducingthe initial threshold values to obtain reference threshold values when echo splitting preset conditions are met, so that filtering detection is carried out under the reference threshold values duringecho splitting.
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