SIMFA信号用于机载雷达LPI性能分析

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。

The waveform design for airborne LPI radar based on the signal of SIMFA

A HPRF(High Pulse Repetition Frequency) waveform used in LPI airborne radar is presented,which have LPI (Low Probability of Intercept) performance.First of all,the mathematic method to generate the designed SIMFA (SIMultaneous Frequency Agile) signal is analyzed in principle;Secondly,SIMFA signal reception and signal processing method is discussed,and the structure of the single-channel receiver is realized and optimized to receive the signal of SIMFA; Then,the performance in electronic warfare is analyzed,so as to the performance of the target detection and the ways to improve target detection performance;Finally,by intercepting factor analysis,it shows the effectiveness of the performance of Low Probability Intercept.