Moving target tracking method based on video SAR cross-domain combination

A moving target and video technology, applied in the field of radar, can solve the problems of missed detection, false alarm, unable to form an effective track, etc., to achieve the effect of low missed detection rate, high detection accuracy, and overcoming unstable detection.
CN112184749AActive Publication Date: 2021-01-05XIDIAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIDIAN UNIV
Publication Date
2021-01-05

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Abstract

The invention discloses a moving target tracking method based on video SAR cross-domain combination. The implementation scheme is as follows: 1) performing coarse detection on a moving target shadow by utilizing background difference in an image domain; 2) carrying out range walk correction in a range Doppler domain by utilizing Keystone transform, and carrying out coarse detection on echo energyof a moving target by utilizing improved OS-CFAR; 3) performing intra-frame data association on the rough detection results formed in the two domains; 4) performing inter-domain matching on the weak correlation track set formed in the two domains; and 5) performing frame-by-frame management on the output flight path. According to the method, confidence judgment is carried out on the tracks in theimage domain and the distance Doppler domain according to the closeness degree of inter-frame data association, inter-frame matching processing is carried out on the weakly combined tracks, high falsealarm and high missing alarm conditions in the image domain or the distance Doppler domain are effectively reduced, and real-time detection and tracking of the video SAR moving target are realized.
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Description

technical field

[0001] The invention belongs to the technical field of radar, and further relates to a moving target tracking method based on cross-domain combination of video-synthetic aperture radar (video-SAR) in the technical field of radar signal tracking. The invention can be used for real-time detection, tracking and track formation of moving targets in video SAR. Background technique

[0002] Video SAR imaging radar can perform real-time imaging of ground target areas all day, all weather, and with high precision. It has the characteristics of high imaging frame rate and high resolution, and can effectively overcome the vulnerability of infrared or visible light sensors to weather conditions and battlefield environments. At the same time, it can also overcome the shortcomings of conventional SAR systems such as low frame rate and difficulty in detecting and tracking moving targets. The target detection of video SAR can be mainly based on two types of methods: one is...

Claims

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