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Radar clutter map detection threshold adaptive setting method

A detection threshold and clutter map technology, applied in radio wave measurement systems, instruments, etc., can solve the problem of reducing the detection probability, and achieve the effect of reducing the probability of false alarms and improving the probability of detection

Active Publication Date: 2017-05-10
CNGC INST NO 206 OF CHINA ARMS IND GRP
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this processing method leads to a reduction in the detection probability, and for areas with weak clutter, it brings unnecessary detection loss

Method used

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  • Radar clutter map detection threshold adaptive setting method
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  • Radar clutter map detection threshold adaptive setting method

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Embodiment Construction

[0026] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0027] The radar clutter pattern detection threshold self-adaptive setting method that the present invention relates to is:

[0028] 1) Divide the radar detection area into several sub-areas according to certain rules;

[0029] 2) Quantify the radar detection space area (horizontal projected area or space volume) according to a certain size (a certain area or a certain volume).

[0030] 3) Count the density L of dot traces (the threshold signal detected by the signal processor) in each sub-region, use the sub-region points to divide by the corresponding quantization value of this sub-region during this density calculation;

[0031] 4) Set the upper limit M and the lower limit N of the dot density threshold, satisfy M≥N, calculate the maximum number of dots according to the radar false alarm probability, and then divide this value by the quantized value of the en...

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Abstract

The invention relates to a radar clutter map detection threshold adaptive setting method which can set different detection threshold coefficients for different regions so as to set a high detection threshold in a strong clutter region for a purpose of reducing false alarms, and to set a low detection threshold in a weak clutter region for improving the detection probability of the weak clutter region. The method takes the whole detection region of the radar into consideration so as to greatly improve the detection performance of the radar.

Description

technical field [0001] The invention belongs to the technical field of radar target detection, and relates to a new method for detecting radar clutter patterns; through the self-adaptive setting method for detection thresholds of radar clutter patterns, the fine adjustment of detection thresholds for radar clutter patterns is realized, and local strong clutter suppression is reduced detection loss. Background technique [0002] The clutter map technology actually adopts the "time unit" average constant false alarm rate processing method, and calculates the average value in the time dimension. At this time, the two-dimensional plane around the radar is divided into many azimuth and distance units, and the received signal of the azimuth and distance units Stored in a memory, each storage unit corresponds to an azimuth distance unit, and the signal stored in each unit is recursively updated as the antenna scans, thus obtaining the amplitude clutter map. [0003] The basic prin...

Claims

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Application Information

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IPC IPC(8): G01S7/292G01S7/35
CPCG01S7/2927G01S7/2928G01S7/354
Inventor 任伦蔡兴雨朱思桥
Owner CNGC INST NO 206 OF CHINA ARMS IND GRP