基于长基线的双时差高精度协同定位方法  

A high accuracy dual TDOA system cooperative positioning method based on long baseline

作　　者：姚云龙 张怡霄 田小超 江鹏飞 孙策 Yao Yunlong;Zhang Yixiao;Tian Xiaochao;Jiang Pengfei;Sun Ce(Unit 96816 of the PLA,Jinhua 322109,China;Unit 94895 of the PLA,Zhangzhou 363000,China)

机构地区：[1]中国人民解放军96816部队,金华322109 [2]中国人民解放军94895部队,漳州363000

出　　处：《战术导弹技术》2023年第6期93-101,141,共10页Tactical Missile Technology

摘　　要：为解决一般时差定位法对远距离目标定位精度不高、定位条件苛刻的问题,基于时差测向原理和泰勒级数法提出了一种新的长基线双时差高精度协同定位方法。基于大间距部署的两套双站时差系统获得两个近似测向结果,通过测向交叉定位算法获得目标位置初值,将初值代入泰勒级数法迭代求解出定位精确值。仿真实验证明,相较于一般的无源定位体制,该方法能显著提升对远距离目标定位精度,且在时差测量误差较大的情况下保证定位精度不恶化。In order to solve the problems of low accuracy and harsh positioning conditions for long-distance target positioning with general TDOA location method,a new long baseline dual TDOA high-precision cooperative positioning method is proposed based on the TDOA direction finding principle and Taylor series method.Two approximate direction finding results are obtained based on two sets of dual station TDOA systems deployed at a large distance,then the initial value of the target position is obtained through the direction finding cross positioning algorithm,and finally the initial value is substituted into the Taylor series method to iteratively solve the positioning accuracy value.Simulation results show that compared with the general passive location system,this method can significantly improve the location accuracy of long-distance targets,and the location accuracy can be ensured in the case of large TDOA measurement error.

关 键 词：高精度 时差测向 泰勒级数法 长基线 时差定位 测向定位 协同定位 

分 类 号：TN958.97[电子电信—信号与信息处理]