Towed decoy discrimination method based on beam space alternating projection-maximum likelihood
When the airborne platform encounters threats,it performs self-defense by releasing towed decoys for jamming.When the aircraft target and towed decoys are within the radar beam width and the radial distance is less than the range resolution,the radar cannot distinguish and measure the aircraft target and towed decoys by us-ing conventional methods.In order to address the problem of digital phased array radar against towed decoys,a method based on beam space alternating projection-maximum likelihood(BSAP-ML)is proposed.Firstly,the di-mensionality of digital phased array is reduced by processing from array space to beam space.Then the angle of the target and the towed decoy is measured iteratively by using alternating projection method.Finally,the aircraft target and decoys are identified by the discriminant method based on angle vector.The simulation results show that this method can be applied to digital phased array radar to effectively carry out super-resolution angle mea-surement and discrimination of the aircraft target and towed decoys.
国家科技期刊平台
NSTL
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维普
