针对随机跳频宽带雷达设计了一种旁瓣抑制滤波器, 考虑到瞬时带宽信号获取的代价较高, 以及其抗干扰性能弱等不足, 采用了一种脉冲频点随机跳变的跳频信号。根据信号特点, 在前人研究的基础上提出了针对该信号的滤波器的设计方案。仿真结果表明, 所设计的滤波器很好地抑制了旁瓣, 具有峰值旁瓣低、收敛速度快、易实现等特点, 在一定程度上提高了宽带雷达的性能。

With the development of electronic countermeasure technology, the requirements on anti-jamming ability, resolution of radar become stricter than before. In this paper, a kind of sidelobe suppression filter is designed for random hopped-frequency wide-band radar. Taking the high price of instantaneous bandwidth signal and weak anti-interference into consideration, a discrete random step- frequency signal is adopted. According to the signal characteristics and on the basis of predecessors, a filter design is proposed for the signal. The simulation results show that the designed filter can suppress the sidelobe obviously, with the characteristics of lower peak sidelobe and easy to be realized, which improves the performance of wide-band radar.