四站时差无源定位精度分析  

Precision Analysis of Passive Location of 4-stations Based on TDOA

作　　者：张政超[1] 童力[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》2010年第6期582-585,共4页Journal of China Academy of Electronics and Information Technology

摘　　要：在推导时差无源定位和定位精度的基础上,重点分析了T型、Y型、菱形、正方形等典型四站布站的定位精度;分析了布站基线长度、布站高度、站址误差、测量误差等因素对定位精度的影响;分析了不规则布站对定位精度的影响。仿真结果表明,四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 4-stations of Y,T,lozenge,square are analyzed.Then the influence from baseline length of station distribution,height of station distribution,error of station address,error of measurement,and irregular station distribution on the GDOP are discussed.The simulation results show that the GDOP of passive location of 4-stations based on TDOA is closely related with the style of station distribution,and the right program for the engineering application should be choosen according to different requirements.

关 键 词：无源定位 四站时差 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]