TDOA estimation of dual-satellites interference localization based on blind separation

查看全文 作　　者：SU [1]Ting;GAO [1]Yong

机构地区：[1]College of Electronics and Information Engineering, Sichuan University

出　　处：《Journal of Systems Engineering and Electronics》索引2019年第30卷第4期,共7页

基　　金：supported by the Fundamental Research Funds for the Central Universities(2082604194194) 摘　　要：The time difference of arrival(TDOA)estimation plays a crucial role in the accurate localization of the satellite interference source.In the dual-satellites interference source localization system,the target signal from the adjacent satellite is likely to be interfered by the normal communication signal with the same frequency.Therefore,the signal to noise ratio(SNR)of the target signal would become too low,and the TDOA estimation through cross-correlation processing would be unreliable or even unattainable.This paper proposes a technique based on blind separation to solve the co-channel interference problem,where separation of the mixed signal can be carried out by the particle filter(PF)algorithm.The experimental results show that the proposed method could achieve more accurate TDOA estimation.The measured data obtained by using the software radio platform at 915 MHz and 2 GHz respectively verify the effectiveness of the proposed method. 关键词：time difference of arrival(TDOA) co-channel INTERFERENCE BLIND separation particle filter(PF)

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TDOA estimation of dual-satellites interference localization based on blind separation

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