Method and device for detecting multi-channel synthetic aperture radar (SAR) ground slow-movement targets

Abstract

The invention discloses a method and a device for detecting multi-channel synthetic aperture radar (SAR) ground slow-movement targets. The method comprises using differences on an interference pattern reflected by differences of scattering properties between the slow-movement targets and static clutters and among static targets and combining interference pattern ranges, phase structure slow-movement target detection quantity and M&P detection quantity to derive a statistic distribution model of the M&P detection quantity under different environment and derive a parameter estimation device of each distribution model; and achieving automatic detection of the slow-movement targets by using a hollow sliding window mode according to constant false alarm rate (CEAR) threshold solving mode corresponding to each distribution model of the derived M&P detection quantity after M&P detection quantity images are obtained combining with multi-view treatment. The technical scheme is that the method and the device have advantages of being high in theoretic and actual performance, simple in engineering realization, rapid, intelligent and the like, and the method and the device can make integral consideration for the faced detection environment.

Description

technical field [0001] The present invention relates to the technical field of synthetic aperture radar (Synthetic Aperture Radar, SAR) of radar technology, in particular to a multi-channel SAR slow ground moving target (Slow Ground Moving Target) detection method and device. Background technique [0002] SAR is a new type of radar system developed in the early 1950s. It is an active microwave remote sensing device with the characteristics of all-weather, all-weather and long-distance imaging, which can greatly improve the information acquisition ability of radar, especially the battlefield perception ability, and has important application value for both military and civilian use. As a part of tactical reconnaissance, Ground Moving Target Indication (GMTI) is a basic function that military SAR systems must have, and it is also an important issue in SAR signal processing. Traditional single-channel SAR systems can only detect moving targets whose spectrum falls completely or...

AI Technical Summary

Problems solved by technology

For the detection of slow-moving targets whose spectrum is submerged in the clutter spectrum, single-channel SAR systems are generally difficult to achieve

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