高精度四站无源时差定位方法及精度分析  

A Precision Analyzing in Four-Station TDOA Location of High Precision

作　　者：刘方正[1] 祁建清[1] 戚亚拯 谭坤 

机构地区：[1]解放军电子工程学院 [2]解放军61251部队 [3]解放军75737部队

出　　处：《火力与指挥控制》2012年第9期105-108,共4页Fire Control & Command Control

摘　　要：分析了四站对辐射源联合时差、俯仰定位原理,并基于三维空间时差定位中的测时误差与站址误差、测角误差可分离,导出空间目标定位误差的协方差矩阵,同时应用简化加权最小二乘(SWLS)融合方法,提升时差定位方法对目标的定位精度。通过计算机仿真进一步分析了系统误差对定位精度的影响,并验证了SWLS融合方法的高定位精度性能。The covariance matrix of 3-D location error is educed based on the separated errors of TDOA. station site and elevation by analyzing the principle of four-station united TDOA and elevation location towards emitters. Simultaneity. the fusion method of SWLS is applied to enhance the location precision. The influence of system error towards location precision is analyzed further by computer simulation. The simulation indicates the higher performance of location of the method of SWLS.

关 键 词：时差 无源定位 简化加权最小二乘 定位精度 

分 类 号：TN97[电子电信—信号与信息处理]