Multi-target tracking method by adopting external illuminating radar and combining target angles

Abstract

The invention belongs to the technical field of multi-target tracking by adopting external illuminating radar, and particularly relates to a multi-target tracking method by adopting the external illuminating radar and combining target angles. The multi-target tracking method by adopting the external illuminating radar and combining target angles comprises steps as follows: digital television signals received by the external illuminating radar are demodulated and recoded sequentially, and direct wave signals of launch stations are reconstructed; the digital television signals received by the external illuminating radar are subjected to self-adaption clutter cancellation processing by the direct wave signals of the launch stations, and signals after clutter cancellation are obtained; the observed quantity of each target is obtained according to the signals after clutter cancellation and the reconstructed direct wave signals of the launch stations; and each target in a rectangular external illuminating radar observing area is localized and tracked with a probability hypothesis density particle filter method according to the angle of each target relative to the external illuminating radar, and the locating and tracking method of each target is the locating method of arrival time.

Description

technical field [0001] The invention belongs to the technical field of external radiation source radar multi-target tracking, and in particular relates to an external radiation source radar multi-target tracking method combined with target angles. The present invention utilizes the multi-transmit-one-receive structure in the external radiation source radar system, combines the target bistatic distance, Doppler velocity and target angle information, and simultaneously locates and tracks multiple targets. Accurate tracking of multiple targets is realized, with a small amount of computation and high tracking accuracy. Background technique [0002] With the development of modern electronic technology, traditional active radar is facing a serious survival crisis in the threats of electronic interference, anti-radiation missiles, ultra-low altitude penetration and stealth technology. In order to deal with the four major threats in modern electronic warfare, external radiation sou...

AI Technical Summary

Problems solved by technology

The combination of multiple observations will improve the tracking accuracy. The most commonly used observations in external radiation source radar tracking are the bistatic distance and Doppler velocity of the target, but only these two observations are used. The probability assumption particle filter (PF ‐PHD) still requires a large number of particles to ensure tracking performance, with a large amount of calculation and poor real-time performance

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