基于时差校正的长基线干涉仪测向星载应用  

Long Baseline Interferometers Direction Finding based on TDOA Correction in the Satellite Borne Application

作　　者：狄慧[1] 姜海坚 范迎春 叶小舟[1] DI Hui;JIANG Haijian;FAN Yingchun;YE Xiaozhou(Shanghai Institute of Satellite Engineering,Shanghai 201109,China)

机构地区：[1]上海卫星工程研究所,上海201109

出　　处：《上海航天(中英文)》2024年第S1期182-186,共5页Aerospace Shanghai(Chinese&English)

摘　　要：基于时差校正的长基线干涉仪测向,在比值法解模糊算法基础上扩大基线长度,利用地面辐射源信号到达各天线的时差估计值,对各天线接收信号进行相位初始校正,以缩小相位模糊数范围,之后鉴相实现长基线高精度测向。基于时差校正的长基线干涉仪测向在星载应用时,针对不同类型目标辐射源信号到达时差估计,提出算法选取原则;提出长基线干涉仪测向定位系统误差控制方法。仿真验证了基于时差校正的长基线干涉仪测向系统星载应用的可行性和高精度。Long baseline interferometers direction finding algorithm based on time difference of arrival(TDOA)correction,extend baseline length,correct the phase of the signal received by each antenna array to reduces the range of phase ambiguity,then phase detection.High accuracy can be achieved by long baseline.The selection principles of TDOA estimate algorithm for different emitter's signal and the error control method of long baseline interferometers direction finding location system are proposed in the satellite borne application.The simulation results show that long baseline interferometers direction finding based on TDOA correction in the satellite borne application is feasible and high-precision.

关 键 词：测向 长基线干涉仪 相位解模糊 到达时间差 定位精度 

分 类 号：TN971[电子电信—信号与信息处理]