Blind radar signal separation algorithm based on third-order degree of cyclostationarity criteria  

作　　者：FAN Xiangyu LIU Bin DONG Danna CHEN You WANG Yuancheng 

机构地区：[1]Bomber and Transport Aircraft Pilots Conversion Department,Air Force Harbin Flying College,Harbin 150088,China [2]College of Joint Operations,National Defense University,Beijing 100091,China [3]College of Aeronautical Engineering,Air Force Engineering University,Xi’an 710038,China

出　　处：《Journal of Systems Engineering and Electronics》2024年第6期1441-1453,共13页系统工程与电子技术(英文版)

基　　金：supported by the National Natural Science Foundation of China(61502522).

摘　　要：Separation and recognition of radar signals is the key function of modern radar reconnaissance,which is of great sig-nificance for electronic countermeasures and anti-countermea-sures.In order to improve the ability of separating mixed signals in complex electromagnetic environment,a blind source separa-tion algorithm based on degree of cyclostationarity(DCS)crite-rion is constructed in this paper.Firstly,the DCS criterion is con-structed by using the cyclic spectrum theory.Then the algo-rithm flow of blind source separation is designed based on DCS criterion.At the same time,Givens matrix is constructed to make the blind source separation algorithm suitable for multiple sig-nals with different cyclostationary frequencies.The feasibility of this method is further proved.The theoretical and simulation results show that the algorithm can effectively separate and re-cognize common multi-radar signals.

关 键 词：blind signal separation cyclostationary frequency Givens matrix degree of cyclostationarity(DCS)blind source separation algorithm 

分 类 号：TN9[电子电信—信息与通信工程]