Abstract:

As a kind of wideband radar signal, the multi-carrier phase-coded (MCPC) radar signal attracts much attention recently and it is gradually applied to target detection, anti-jamming and high resolution imaging fields for the its high spectrum efficiency, favorable auto-correlation properties and frequency diversity. For the MCPC radar signal, high range sidelobe is easily produced by using traditional pulse compression, which will bring difficulty to detect weak target adjacent to the strong one. The MCPC radar signal is modeled and analyzed. Combining the characteristics of the MCPC radar signal, an approach of adaptive pulse compression of the MCPC radar signal is proposed, which uses the cyclic iterative algorithm to obtain the optimum match filter in each range cell. Thus, the range sidelobe is effectively suppressed and the performance of detecting the weak target is also improved. Simulation results verify the effective ness of the algorithm. Meanwhile, the influence of phase code sequence on the performance of sidelobe suppression is also analyzed.