Random Pulse Repetition Interval Compressed Sensing Radar (RPRICSR) has superiorities on target detection, unambiguous velocity measurement as well as anti-velocity jamming for its signal randomness. However, RPRICSR cannot detect the micro motion targets effectively under the presence of micro motion false targets within present echo processing methods. This paper firstly combined Short Sparse Recovery (SSR) method with RPRI signal under the frame of Compressed Sensing. Then the fact that echo signals of true and false micro motion targets are sparse in different dictionaries are utilized to separate the true and false micro motion targets based on a union dictionary. The proposed method is proved to be effective compared to the traditional signal processing methods of RPRICSR according to the simulation results.
Intra-pulse frequency coded (IPFC) signal, with its large time-bandwidth and low probability of interception characteristics, is widely applied to anti-jamming radar system. This paper focuses on the efficiency of interrupted sampling repeater jamming (ISRJ) under IPFC signal, and the influence on jamming effect with different signal forms and waveform parameters is mainly analyzed. The simulation results show that the ISRJ of step frequency coded signal and liner modulated frequency signal have similar jamming performance. The ISRJ of random frequency coded signal can only form a single false target at direct forwarding mode. Furthermore, with the increasing of the sub-pulse number, the ISRJ performance of random frequency coded signal will be reduced.
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