Track-before-detect for bistatic radar based on pseudo-spectrum

作     者：Tao HAN Gongjian ZHOU Tao HAN;Gongjian ZHOU

作者机构：School of Electronics and Information EngineeringHarbin Institute of TechnologyHarbin 150001China Key Laboratory of Marine Environmental Monitoring and Information ProcessingMinistry of Industry and Information TechnologyHarbin 150001China 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2024年第37卷第1期

页      面：236-246页

核心收录：

学科分类：0810[工学-信息与通信工程] 080904[工学-电磁场与微波技术] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 081105[工学-导航、制导与控制] 081001[工学-通信与信息系统] 081002[工学-信号与信息处理] 0825[工学-航空宇航科学与技术] 0701[理学-数学] 0811[工学-控制科学与工程] 

基　　金：supported in part by the National Natural Science Foundation of China (No. 61671181) the Heilongjiang Outstanding Youth Science Fund,China (No.JQ2022F002) 

主　　题：Weak target detection Bistatic radar Track-before-detect Pseudo-spectrum Multiframe integration 

摘      要：Track-Before-Detect(TBD) is an efficient method to detect dim targets for radars. Conventional TBD usually follows an approximate motion model of the target, which may cause an inaccurate integration of the target energy. A TBD technique on basis of pseudo-spectrum in mixed coordinates adopting an accurate motion model for bistatic radar system is developed in this *** predicted position in bistatic polar plane is derived according to a nonlinear function that exactly describes the constant Cartesian velocity motion. Then around the predicted position, a pseudo-spectrum is formulated and its samples are accumulated to the integration frame for energy integration. The evolution of the state and the procedure of accumulation of the target energy are derived elaborately. The superior performance of the proposed method is demonstrated by some simulations.