Analysis and side peaks identification of Chinese DTTB signal ambiguity functions for passive radar  

作　　者：GAO ZhiWen TAO Ran WANG Yue 

机构地区：[1]Department of Electronic Engineering, Beijing Institute of Technology, Beijing 100081, China [2]Beijing Aeronautical Technology Research Center, Beijing 100076, China

出　　处：《Science in China(Series F)》2009年第8期1409-1417,共9页中国科学（F辑英文版）

基　　金：Supported by the National Natural Science Foundation of China (Grant No. 60232010);the Ministerial Foundation of China (Grant No.A2220060039);the National Natural Science Foundation of China for Distinguished Young Scholars (Grant No. 60625104)

摘　　要：Passive radar is one of the current research focuses. The implementation of the Chinese standard digital television terrestrial broadcasting （DTTB） creates a new opportunity for passive radar. DTTB system contains single-carrier and multicarrier application modes. In this paper, ambiguity functions of the D＇I-I＇B signals in the single-carrier and multicarrier application modes are analyzed. Ambiguity function of the DTTB signal contains one main peak and many side peaks. The relative positions and amplitudes of the side peaks are derived and the reasons for the occurrence of the side peaks are obtained. The side peaks identification （SPI） algorithm is proposed for avoiding the false alarms caused by the side peaks. Experimental results show that the SPI algorithm can indentify all the side peaks without the power loss. This research provides the foundation for designing the DTTB based passive radar.Passive radar is one of the current research focuses. The implementation of the Chinese standard digital television terrestrial broadcasting （DTTB） creates a new opportunity for passive radar. DTTB system contains single-carrier and multicarrier application modes. In this paper, ambiguity functions of the D＇I-I＇B signals in the single-carrier and multicarrier application modes are analyzed. Ambiguity function of the DTTB signal contains one main peak and many side peaks. The relative positions and amplitudes of the side peaks are derived and the reasons for the occurrence of the side peaks are obtained. The side peaks identification （SPI） algorithm is proposed for avoiding the false alarms caused by the side peaks. Experimental results show that the SPI algorithm can indentify all the side peaks without the power loss. This research provides the foundation for designing the DTTB based passive radar.

关 键 词：passive radar DI-FB ambiguity function side peaks identification 

分 类 号：TN949.197[电子电信—信号与信息处理] TN952[电子电信—信息与通信工程]