非对称构型多站时差定位系统定位精度分析  

Location precision analysis of multi-station TDOA location system with non-symmetric configuration

作　　者：张欢 周云生 段志慧 ZHANG Huan;ZHOU Yunsheng;DUAN Zhihui(Beijing Research Institute of Telemetry,Beijing 100094,China)

机构地区：[1]北京遥测技术研究所,北京100094

出　　处：《遥测遥控》2020年第1期19-25,共7页Journal of Telemetry,Tracking and Command

摘　　要：以空间四站时差定位系统为例对多站时差定位系统原理进行阐述,推导定位系统的定位精度并分析影响系统定位精度的因素。通过仿真分析多站时差定位系统在不同空间构型、站间距、时差测量误差、位置误差条件下对地面辐射源的定位精度得出:多站时差定位系统的空间构型直接影响定位精度,主辅站间距长度越长定位精度越好;各站位置误差比时差测量误差对定位精度的影响更大;对于多站定位系统出现的非对称空间构型,通过合理的布站优化可以提升对某一固定辐射源的定位精度。This paper takes the space four-station time difference positioning system as an example to explain the principle of the multi-station time difference positioning system,derives the positioning accuracy of the positioning system and analyzes the factors that affect the system positioning accuracy.Through simulation multi-station location system different spatial configurations,station spacing,the time difference measurement error,the position error of the positioning accuracy in the condition of the ground radiation derived:multi-station spatial configuration location system directly affect the positioning accuracy,the longer the distance between the main and auxiliary stations,the better the positioning accuracy;the position error of each station has a greater influence on the positioning accuracy than the time difference measurement error;for an asymmetric spatial configuration of the multi-station positioning system,by rational station optimization can improve the positioning accuracy of a fixed radiation source.

关 键 词：多站时差定位 辐射源定位 定位精度分析 非对称构型 

分 类 号：TN971[电子电信—信号与信息处理]