一种多频外辐射源雷达信号相参处理方法  

Coherent Processing Technique of Passive Radar Based on Multi-Frequency Signals

作　　者：李军[1] 刘红明[1] 何子述[1] 胡蜀徽[1] 王擘[1] 李会勇[1] 

机构地区：[1]电子科技大学电子工程学院,四川成都611731

出　　处：《电子学报》2011年第12期2890-2894,共5页Acta Electronica Sinica

基　　金：中央高校基本科研业务费专项资金(No.2010J015;No.2009J015)

摘　　要：拓展照射源个数,增加可利用的信号功率以改善系统的检测性能,是外辐射源雷达的一个重要发展方向.本文以调频广播外辐射源雷达为背景,研究了基于多个电台信号的多频外辐射源雷达相参处理技术.从信号模型出发,推导了各匹配输出的表达式,分析了各信号间的相位关系及影响信号相参合成的各种因素;信号处理过程中进行相位补偿,实现了多信号的相参合成;最后对系统在距离分辨、杂波抑制、检测信噪比等方面获得的性能改善进行了讨论;仿真结果验证了理论分析的正确性,对进一步提升外辐射源雷达的系统性能具有重要的参考意义.It is one of the development directions of passive radar to expand the number of illuminators and increase the available signal power to improve the system performance.Aimed at the FM broadcasting passive radar,this paper researched the coherent processing technique based on multi-frequency signals.Starting from signal model,it deduced the expression of each matching-filter output,and analyzed the phase relationship of each signal and various factors infecting coherent integration of multi-signals.The differentia phase item of each signal was compensated during signal processing to realize coherent integration.At last,the performance improvements of range distinguishing,clutter restraint and detection SNR were discussed.Simulation results proved the valid of the theory analysis,and it was important to improve the system performance of passive radar.

关 键 词：外辐射源雷达 多频信号 相参合成 调频广播 

分 类 号：TN95[电子电信—信号与信息处理]