Joint radar transmitted waveform and received filter design approach against velocity deception jamming
As a typical active jamming,velocity deception jamming can cause radar to detect single or multiple false targets in Doppler dimension at the same time,resulting in false alarm and posing a huge challenge to radar detection.A joint radar transmitted waveform and mismatched filter design method focus on suppressing the velocity deception jamming is proposed,which comprehensively considers many degrees of freedom such as intra-pulse,inter-pulse coding and receiver filter.Firstly,the peak loss of unmatched filter is taken as the penalty term,and the optimization objective function is constructed by combining the target sidelobe energy and interference energy on the Doppler spectrum of the received signal,and the peak-to-average power ratio constraint of the transmitted waveform is considered.Secondly,the block coordinate descent majorization-minimization method is proposed to solve this problem,based on the coordinate descent method and majorization-minimization theory.Finally,the simulation results show that compared with the traditional pulse to pulse initial phase design,the against velocity deception jamming performance of the proposed method is greatly improved,specifically,the peak sidelobe ratio is increased by about 6 dB in the special stopband.
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