Coherent-processing multi-target tracking method of security monitoring radar system

Abstract

The invention discloses a coherent-processing multi-target tracking method of a security monitoring radar system. Spectrum analysis is carried out on target echo signals, different spectral lines include distance information of different targets, FFT processing is carried out on spectral lines of the same distance unit in different repetition periods to obtain target Doppler information, namely speed information of the target, and tracks of the multiple targets are tracked at the same time in a target association algorithm. The method can effectively solve the problem that multiple targets tend to be pair in error, and reduce the complexity of the algorithm of a signal processing unit.

Description

technical field [0001] The invention belongs to the field of signal processing, in particular to a multi-target tracking method of a coherent processing security monitoring radar system. Background technique [0002] With the development of radar electronic technology, the application of radar in security monitoring system is more and more extensive. Radar not only needs to monitor and alarm a single target, but also needs to track multiple dangerous targets in the area and display the target trajectory in order to quickly and accurately control the dangerous targets. Traditional security monitoring radars generally use microwave-to-radio radar and LFMCW (Linear Frequency Modulated Continuous Wave) radar. Microwave through-radiation radar adopts two radars placed opposite to each other, and an electronic wall is formed between the two radars. When the target passes through the electronic wall, the radar system will send out an alarm message. Microwave through-radiation rad...

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Problems solved by technology

[0016] When there are n targets in front of the radar, the echo signal is the superposition of the echo signals of multiple targets, n spectrum peaks can be obtained from the spectrum analysis of the rising edge frequency band, and n spectrum peaks can also be obtained from the spectrum analysis of the falling edge frequency band. peak, since the corresponding relationship between the spectral lines of the two genealogy cannot be obtained, in fact, the distance and speed information of the target cannot be obtained accurately at all, and the multi-target tracking problem cannot be solved.

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