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A Sea Clutter Suppression Method Based on Multi-radar Distributed Detection

A distributed, sea clutter technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of low data rate, unsuitable, limited effect of false alarm suppression of sea clutter, etc. Effect

Active Publication Date: 2017-03-22
THE 28TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0018] The purpose of the present invention is to provide a sea clutter suppression method based on multi-radar distributed detection, which is used to overcome the limited effect of single radar sea clutter false alarm suppression, low data rate, and inability to adapt to fast and small targets.

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  • A Sea Clutter Suppression Method Based on Multi-radar Distributed Detection
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  • A Sea Clutter Suppression Method Based on Multi-radar Distributed Detection

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Embodiment Construction

[0040] The invention provides a sea clutter suppression method based on multi-radar distributed detection. During multi-radar distributed detection, signal calibration is performed first. Then distributed detection is performed on each channel, and the detection results are fused. Such as image 3 As shown, the specific implementation steps are:

[0041] For radar A and radar B that are asynchronously and independently observed, the video signals of the two are respectively read in for distributed detection: on the one hand, the "AND" channel detection and "OR" channel detection are performed on the radar A video signal in parallel. On the other hand, "AND" channel detection and "OR" channel detection are performed on the radar B video signal in parallel. Taking the azimuth as the index, store the detection results of the "AND" channel and "OR" channel of radar B.

[0042]Among them, the "AND" channel detection refers to the adaptive threshold CFAR detection of the video si...

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Abstract

The invention discloses a sea clutter suppression method based on multi-radar distributed detection, which belongs to the field of radar signal processing. The sea clutter suppression method based on multi-radar distributed detection realizes distributed detection by utilizing multi-radar energy advantage, diversity advantage and correlative difference between sea clutter and a target under the condition of asynchronous observation, so as to suppress the defects that a traditional single radar has limited effect, low data rate and is only suitable for slow and small objects when used for processing sea clutter regions, avoids the reduction of target detecting capability caused by false alarm suppression, and provides quality data for the subsequent tracking and admission.

Description

technical field [0001] The present invention relates to a sea clutter suppression method based on multi-radar distributed detection, in particular to a method for implementing distributed detection by using multi-radar energy advantages, diversity advantages, and correlation differences between sea clutter and targets under asynchronous observation conditions , which belongs to the field of radar signal processing. Background technique [0002] Sea clutter is formed by the superposition of echo vectors of many scatterers in the radar resolution unit. It is affected by environmental factors such as sea waves, currents, wind speed, and weather, and is also related to radar operating frequency, polarization mode, detection distance, resolution, transmission power, It is related to parameters such as horizontal beam width and grazing angle. Raw radar signals of sea clutter and targets in clutter are as follows: figure 1 shown. [0003] For low-resolution radars with a pulse w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/41G01S7/36
CPCG01S7/36G01S7/414
Inventor 刘文松茅文深翟海涛郑秋俞剑顾晶萨出拉赵玉丽
Owner THE 28TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP