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Unilateral detection unit cumulative average based multi-target constant false alarm rate detection method

A technology of constant false alarm detection and detection unit, applied in radio wave measurement systems, instruments, etc., can solve problems such as detection performance degradation

Inactive Publication Date: 2016-11-09
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the multi-target constant false alarm detection method based on the cumulative average of unilateral detection units provided by the present invention solves the problem that the detection performance of the existing radar target detection is degraded in the multi-target interference environment

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  • Unilateral detection unit cumulative average based multi-target constant false alarm rate detection method

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Embodiment Construction

[0027] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0028] refer to figure 1 , figure 1 A flow chart of a multi-target CFAR detection method based on cumulative averaging of single-side detection units is shown, and the method 100 includes steps 101 to 105 .

[0029] In step 101, the echo powers of the previous consecutive detection units in the radar scanning image are obtained; the previous consecutive detection units here refer to the selection from the first detection u...

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Abstract

The invention discloses a unilateral detection unit cumulative average based multi-target constant false alarm rate detection method, which comprises the steps of acquiring the echo power of a plurality of front continuous detection units in a radar scanning image; calculating an initial value of a radar target detection threshold according to the acquired echo power of the plurality of detection units; judging whether a current detection unit in the radar scanning image has a target or not, wherein it is showed that the current detection unit has a target when the echo power of the current detection unit in the radar scanning image is greater than the detection threshold, and if not, the current detection unit does not have a target; updating the radar target detection threshold, wherein the radar target detection threshold is represented as S=[p / (n-m)]T; and enabling the updated detection threshold to act as a radar target detection threshold of the next detection unit.

Description

technical field [0001] The invention relates to the field of radar signal detection, in particular to a multi-target constant false alarm detection method based on cumulative average of unilateral detection units. Background technique [0002] Radar target detection is always performed against the background of clutter and jamming, which are time-varying and not uniform in space. To ensure the stability of radar target detectors, various constant false alarm (CFAR) methods are required. At present, the commonly used CFAR methods include unit average CFAR (CA-CFAR), unit selected large CFAR (GO-CFAR), unit selected small CFAR (SO-CFAR), and ordered statistical CFAR (OS-CFAR). OS-CFAR is Based on the orderly statistical sorting of the measured values ​​of all reference units, the most suitable kth reference unit is selected for background clutter power estimation. [0003] Analyzing the detection performance of the above four methods, there are the following defects: in the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41G01S7/36
CPCG01S7/36G01S7/41G01S7/414
Inventor 于雪莲郝英杰李海翔曲学超周云
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA