五站时差无源定位及其精度分析  

Precision Analysis of Passive Location of 5-stations Based on TDOA

作　　者：郭伟锋[1] 张政超[1] 

机构地区：[1]中国人民解放军63891部队

出　　处：《中国电子科学研究院学报》2013年第6期617-621,共5页Journal of China Academy of Electronics and Information Technology

基　　金：国家863项目

摘　　要：在推导五站时差无源定位和定位精度的基础上,重点分析了正方形、Y形、T形、五边形等典型五站布站的定位精度;分析了布站基线长度、布站高度等因素对定位精度的影响;分析了空间机载无源侦察系统的四种不同布站方式的定位精度。仿真结果表明,五站时差无源定位精度与布站方式密切相关,工程应用应根据不同需求选择适合的方案。Passive location using TDOA（ time difference of arrival）and its location precision are deduced, and GDOP（ geometrical dilution of precision）of representative 5-stations of square, Y, T, 5sides are ana- lyzed. Then the relationship between length of based line, height of stations and GDOP are discussed. GDOP of passive location of 5-stations based on TDOA is connected closely with location style by simulation result, engineering application should choose adaptive case according to different requirement.

关 键 词：无源定位 五站时差 精度分析 几何精度稀释因子 

分 类 号：TN958.97[电子电信—信号与信息处理]