Forward-looking scanning radar imaging method

A scanning radar and imaging method technology, applied in the direction of radio wave reflection/re-radiation, using re-radiation, measuring devices, etc., can solve the problem of increasing the range of forward-looking imaging scenes, failing to obtain better forward-looking imaging results, and Issues such as slow regional Doppler changes
CN102967859BActive Publication Date: 2014-03-26UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
UNIV OF ELECTRONICS SCI & TECH OF CHINA
Publication Date
2014-03-26

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Abstract

The invention discloses a forward-looking scanning radar imaging method. The method comprise the steps of initializing imaging system parameters; performing range pulse compression on echo data; subjecting a radar right forward-looking area to super-resolution imaging processing; performing back projection imaging processing on a large-azimuth area; and splicing imaging results of the two areas. According to the forward-looking scanning radar imaging method, an ill-posed problem regularization method is utilized, and accordingly, the azimuth resolution is improved, and a back projection algorithm is combined to improve the azimuth resolution of the large-azimuth area. The two imaging results are spliced into a complete scene image, so that the forward-looking scanning radar imaging scene range is expanded, and not only the defect that synthetic aperture radars cannot perform forward-looking imaging is overcome, but also the problem that azimuth imaging scene ranges of prior forward-looking scanning radars are small is solved.
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Description

technical field

[0001] The invention belongs to the technical field of radar signal processing, in particular to an imaging method in forward-looking scanning radar (Forward-Looking Scanning Radar) technology. Background technique

[0002] Microwave imaging technology, as an active aviation and aerospace remote sensing method, has the characteristics of all-weather and all-weather work. It has been widely used in geological surveying and mapping, disaster monitoring, military reconnaissance and other fields. It has become a high-resolution earth observation and global One of the most important means of resource management. However, due to the limitations of its own working system, the existing Synthetic Aperture Radar (SAR) cannot achieve high-resolution imaging in the azimuth direction of the forward-looking area, so that SAR can be used in aircraft forward-looking to the ground, autonomous landing, material airdrops, and missiles. Terminal guidance and other aspects can n...

Claims

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