基于多时差的干扰源定位虚假点消除方法  

False Points Elimination Method for Tri⁃satellite Localization Based on Multi⁃time TDOA

作　　者：柏如龙[1,2] 霍立寰 陈兵 王海清[1] 江漫[1] 杨光[1] 许瑞杰 廖桂生 BAI Rulong;HUO Lihuan;CHEN Bing;WANG Haiqing;JIANG Man;YANG Guang;XU Ruijie;LIAO Guisheng(The 54th Research Institute of CETC,Shijiazhuang 050081,China;Hebei Key Laboratory of Electromagnetic Spectrum Cognition and Control,Shijiazhuang 050081,China;National Lab of Radar Signal Processing,Xidian University,Xi’an 710071,China)

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081 [2]河北省电磁频谱认知与管控重点实验室,河北石家庄050081 [3]西安电子科技大学雷达信号处理国家重点实验室,陕西西安710071

出　　处：《无线电通信技术》2022年第2期347-352,共6页Radio Communications Technology

基　　金：河北省重大科技成果转化专项基金(14040322Z)。

摘　　要：三星时差定位通过两条时差线的交点确定干扰源位置,然而,当两条时差线存在两个交点时,理论上难以确定真实位置。针对这一问题,提出了基于多时刻时差的干扰源定位虚假点消除方法。该方法利用多个时刻的时差测量数据,基于WGS⁃84地球椭球模型建立定位方程组,通过牛顿迭代方法得到真实干扰源位置附近的定位结果,然后将该结果作为单时刻定位方程牛顿迭代方法求解的初始值,最终得到去除虚假点后高精度的定位结果。仿真实验和实测数据处理结果验证了所提方法的有效性,以及在较大测量误差下和先验初始值偏差的情况下仍具有良好的稳健性。The tri⁃satellite time difference of arrival(TDOA)localization determines the location of the interference source through the intersection of two lines of the TDOA.However,when there are two intersection points of the lines of the TDOA,it is difficult to determine the true position theoretically.To solve this problem,a method to eliminate false points in interference source location based on multi⁃time difference is proposed.Firstly,the method establishes a positioning equation system based on the WGS⁃84 earth ellipsoid model using the TDOA measurement data at multiple moments.The Newton iteration method is used to obtain the positioning results near the location of the real interference source.Then the results are used as the single⁃time positioning equation Newton iteration method.The initial value of the solution finally obtains high⁃precision positioning results after removing false points.Simulation experiments and measured data processing results validate the effectiveness of the proposed method,and the robustness in the condition of the large measurement errors and deviation of the initial position.

关 键 词：干扰源定位 无源定位 虚假点消除 

分 类 号：TN97[电子电信—信号与信息处理]