低截获概率(low probability of intercept，LPI)雷达已成为新时代雷达装备中关键的技术体制或工作模式，针对LPI雷达信号调制识别及参数估计方法的研究是当前雷达对抗侦察领域的热点。首先，分析了几种典型LPI雷达信号的脉内特征，梳理了 LPI雷达信号调制识别及参数估计的传统和主流方法，并说明其原理、优缺点和研究现状。最后，总结了现有LPI雷达信号调制识别及参数估计方法尚存的问题，并指出其未来发展趋势，旨在为今后的研究提供参考。
Research progress on LPI radar signal modulation recognition and parameter estimation
Low probability of intercept(LPI)radar has become a key technology system or working mode of radar equipment in the new era.The study of LPI radar signal modulation recognition and parameter estimation methods has become a hot spot in the field of radar counter reconnaissance.This paper firstly analyzes the intra-pulse characteristics of several typical LPI radar signals,sorts out the traditional and mainstream methods of LPI radar signal modulation recognition and parameter estimation,and explains their principles,advantages,disadvantages and research status.Finally,the remaining problems of existing LPI radar signal modulation recognition and parameter estimation methods are summarized,and their future development trends are also pointed out,aiming to provide some reference for future scholars'research.
radar counter reconnaissancelow probability of intercept(LPI)radar signalintra-pulse characteristicmodulation recognitionparameter estimation
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