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Target detection method for three-coordinate active phased array radar

A phased array radar and target detection technology, which is applied to measuring devices, using re-radiation, and radio wave measurement systems, etc., can solve the problems of little change between frames, missing detection of weak and small targets, single target in sea scenes, etc.

Active Publication Date: 2019-09-10
ANHUI SUN CREATE ELECTRONICS
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Problems solved by technology

[0005] However, since the target in the sea scene is single and the frame-to-frame change is not large, the method of this patent can detect the sea target. When the scene target is complex and the frame-to-frame change is large, the method of this patent is likely to cause the detection of weak and small targets.

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  • Target detection method for three-coordinate active phased array radar
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[0074] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0075] In the present invention, the azimuth coverage range of the three-coordinate active phased array radar is 0°~X°, the elevation angle coverage range is 0°~Z°, and the distance coverage range is 0km~Ykm; the three-coordinate active phase control The azimuth sampling interval of the array radar is Δx, which is quantized as Ax azimuths; the elevation angle sampling interval is Δz, which is quantized as Az elevation angles;

[0076] The ...

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Abstract

The invention discloses a target detection method for a three-coordinate active phased array radar. By respectively constructing a fast picture unit and a slow picture unit in different division manners for different distance ranges and respectively setting the corresponding threshold number of points for different picture units, when calculating the amplitude value threshold of a single picture unit in multi-frame accumulation, not only the amplitude value threshold of the single picture unit in the previous frame is considered, but also the number of points occupied by the echo data of the single picture unit within a certain number of frames is comprehensively considered to calculate and adjust the amplitude value threshold of the single picture unit. The method provided by the invention can effectively suppress the clutter and improve the detection capability of the target.

Description

Technical field [0001] The invention relates to the technical field of radar target detection, in particular to a target detection method for three-coordinate active phased array radar. Background technique [0002] Target detection refers to detecting the echo data information belonging to the target from the echo data information received by the radar, and filtering out the clutter. And in the subsequent point track processing, accurate target detection can improve the point track aggregation accuracy and improve the track tracking quality. Therefore, choosing the best target detection method is essential to accurately estimate target parameters. [0003] The traditional method of target detection based on echo data is to directly perform one-dimensional constant false alarm rate processing, without considering the influence of strong clutter on weak and small targets, which reduces the ability to extract weak and small targets and leads to the wrong extraction of weak and small...

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Application Information

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IPC IPC(8): G01S13/88
CPCG01S13/885
Inventor 杨琳黄涛吴俊任翔许义宝
Owner ANHUI SUN CREATE ELECTRONICS
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