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提出一种机载LPI(Low Probability of Intercept)雷达HPRF(High Pulse Repetition Frequency)波形,实现了波形设计产生、接收处理,同时对波形抗干扰性能、目标探测性能和LPI性能进行了分析。首先,从原理上对所设计SIMFA(SIMultaneous Frequency Agile)信号的产生方法进行了数学分析,给出波形产生方法;然后,对SIMFA信号的接收及信号处理方法进行研究,实现了单通道接收机对所设计波形的顺利接收;其次,对于电子对抗常用的两种干扰机--瞄准式窄带干扰机和信道化接收机,给出了SIMFA信号的抗干扰性能;再次,分析了SIMFA信号的目标探测性能,并给出提高目标探测性能的方法;最后,通过截获因子的分析,说明了SIMFA信号LPI性能的有效性。
An HPRF (High Pulse Repetition Frequency) waveform of airborne LPI (Low Probability of Intercept) radar is proposed. The generation and reception of the waveform are realized. At the same time, the anti-jamming performance, target detection performance and LPI performance are analyzed. First of all, the generation method of the SIMIMourized Frequency Agile (SIMFA) signal is theoretically analyzed and the waveform generation method is given. Then, the receiving and signal processing of the SIMFA signal are studied, and the single-channel receiver pair The designed waveform is successfully received. Secondly, the anti-jamming performance of SIMFA signal is given for the two types of jammers, Targeted Narrowband Jammer and Channelized Receiver, which are commonly used in electronic warfare. Thirdly, the target detection of SIMFA signal is analyzed. Finally, the effectiveness of the LPI performance of SIMFA signals is illustrated by the analysis of the intercept factor.