基于北斗卫星信号的多站外辐射源定位技术

Multi-station External Radiation Source Positioning Technology Based on Beidou Satellite Signal

随着北斗卫星定位技术的成熟,选取北斗卫星信号作为外辐射源信号进行无源探测对建设信息化预警探测网络体系具有重要的军事意义和实用价值。论文首先从信号层面论证了北斗卫星信号作为外辐射源信号的优势;然后研究了一种基于时差和角度的多站外辐射源定位系统,并推导了系统的定位原理;最后针对目标量测数据处理过程中的非线性定位跟踪问题,给出了基于最小偏度采样的无迹卡尔曼滤波跟踪算法,仿真验证表明在该算法处理非线性滤波跟踪时能保持较为稳定的跟踪性能,且实时性较好。

With the maturity of Beidou satellite positioning technology,the selection of Beidou satellite signals as external illuminators for passive detection is of great military significance and practical value to the construction of information early warning and detection network system.This paper firstly demonstrates the advantages of Beidou satellite signal as external illuminators from the signal level.Then a multistatic passive coherent location system based on time difference and angle is studied and its location principle is deduced.Finally,an unscented Kalman filter tracking algorithm based on minimum skewness sampling is presented to solve the nonlinear location tracking problem in the process of target measurement data processing.Simulation results show that the algorithm can maintain stable tracking performance and good real-time performance when dealing with nonlinear filtering tracking.