A Doppler tolerant waveform and filter joint design method with anti-interrupted sampling repeater jamming

In order to solve the problem of interrupted sampling repeater jamming (ISRJ) and improve radar detection performance. A joint design method with Doppler tolerance for anti-interrupted sampling repeater jamming transmit waveform and mismatch filter is presented. Under constant modular and energy constraints, the optimization problem is established by minimizing the sum of the two dimensional sidelobe level of the transmit waveform and the receive filter cross correlation ambiguity function(AF), the signal-to-noise ratio loss(SNRL), interference signal ratio after interference signal mismatch filtering and the normalized pulse compression peak value of the interference signal. A Doppler tolerance jamming suppression algorithm based on the majorization-minimization framework (DTJS-MM) is presented to transform and solve the resulting non-convex problem. Simulation results show that the SNRL of the proposed method is 0.146 dB and 0.1375 dB lower compared with the Lagrange alternating direction method of multipliers (LADMM) method and the majorized iterative algorithm for jamming suppression(MIAJS) method, peak pulse compression of interfering signal is 5.73 dB and 0.8 dB lower, respectively. The average sidelobe level of the cross-correlation ambiguity function is 5.6 dB and 5.91 dB lower compared to the coordinate iteration for ambiguity function iterative shaping(CIAFIS) and ambiguity function shaping via iterative minimization (AFSIM) methods, zero Doppler correlation function peak sidelobe levels are 3.31 dB and 2.82 dB lower, respectively, it is verified that the method in this paper is effective in reducing the SNRL, the integral sidelobe level of local AF and the peak sidelobe level of pulse compression of interfering signals.