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A Radar Adjacent Target Segmentation Method Based on Rain Corrosion Algorithm

A target segmentation and corrosion algorithm technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of large measured values, indivisible targets, and inaccurate measured values

Active Publication Date: 2021-09-28
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] To sum up, the problem existing in the existing technology is: the measurement value becomes larger when densely adjacent targets are measured, making it impossible to separate the targets, and the measurement value is not accurate
[0004] The difficulty and significance of solving the above technical problems: when tracking radar targets cross-navigating, or navigating in formation, tracking and driving each other, due to the short distance between single targets that are close to each other, if the target is not correctly segmented, it will cause the target spot Intermittent, approaching single-target tracks are difficult to maintain stability

Method used

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  • A Radar Adjacent Target Segmentation Method Based on Rain Corrosion Algorithm
  • A Radar Adjacent Target Segmentation Method Based on Rain Corrosion Algorithm
  • A Radar Adjacent Target Segmentation Method Based on Rain Corrosion Algorithm

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Effect test

Embodiment 1

[0038] In recent years, scholars at home and abroad have proposed various bionic algorithms by simulating the habits of biological populations or natural phenomena in nature. In order to divide the measured values ​​of adjacent targets, the invention simulates the process of rain scouring mountains to form river valleys, and proposes a rain erosion algorithm.

[0039]Mountains and valleys are very common in nature. Some valleys are formed by the erosion of rivers between mountain peaks. And these small rivers are usually fed by raindrops that fall on these mountain peaks. The raindrops fall randomly on the mountain, and flow down the mountain due to the effect of gravity and the shape of the mountain. A large number of raindrops flow down the mountain and gradually converge into small streams, and the small streams continue to converge into larger rivers. The terminus of the river is usually a barrier lake or a plain beyond the mountains. After the stream washes over the m...

Embodiment 2

[0053] The radar adjacent target segmentation method based on the rain erosion algorithm is the same as that in Embodiment 1

[0054] The effect of the present invention is further described in the experiment below

[0055] actual data

[0056] Use measured data to illustrate the effect of the method of the present invention. Image 6 It is a part extracted from the measured data. The abscissa and ordinate represent the azimuth and distance axes, respectively. Image 6 with Figure 7 Medium colors from black to white indicate increasing measurements, Image 6 It is to extract the unprocessed part of the measured value, and the slightly white part is the clutter area; Figure 7 It is the measurement value retained after clutter processing, target detection and rain erosion algorithm; from the results, there are a total of 8 targets marked by different numbers. Among them, target 3 and target 4 are in the same distance unit as target 7 and target 8, and the azimuths are re...

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Abstract

The invention belongs to the technical field of radar data processing, and discloses a radar adjacent target segmentation method based on a rain erosion algorithm, which inputs radar video data after radar signal processing; Area, size and length determine the area occupied by adjacent targets that need to be segmented; the measured values ​​of the same distance unit and different azimuth units in the area occupied by adjacent targets are taken out and processed separately, that is, each distance unit channel is proposed separately and processed separately. After completion, perform target detection processing on the area again. The invention simulates the process that rain scours the mountains, continuously corrodes the mountains, forms river valleys, and the mountain peaks are divided by streams after continuous corrosion, and is used for processing the adjacent targets detected by the segmentation radar. Both experiments and practice prove that the invention has good effect, meets the requirement of high-resolution radar for target segmentation, and is used for radar adjacent target segmentation.

Description

technical field [0001] The invention belongs to the technical field of radar data processing, and in particular relates to a radar adjacent target segmentation method based on a rain erosion algorithm, which is used for a radar data processing system to segment extended targets. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: With the rapid development of modern radars and the continuous improvement of radar observation resolution, the problem of radar extended target detection and tracking has emerged. In high-precision and high-resolution radar, the area under the Cartesian coordinate system represented by each pixel or cell in the radar video data will become smaller, so that the size of some targets (such as ships) will be larger than A radar pixel cell occupies multiple cells. The same target exists in multiple radar video data pixels at the same time, forming an area block with certain shape characteris...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/41
CPCG01S7/41
Inventor 许录平陈宇许娜孙景荣李沐青阎博闫江泽慧郭塒桧
Owner XIDIAN UNIV
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