利用TDOA方法实现单站机动无源定位  

Passive Localization of Single Motive Station Using TDOA Method

作　　者：彭根建[1] 周希朗[1] 

机构地区：[1]上海交通大学电子工程系,上海200030

出　　处：《计算机仿真》2005年第10期20-22,30,共4页Computer Simulation

摘　　要：传统的到达时间差定位法(TDOA)一般需要至少一个探测站点和两个辅助站才能达到定位目的,而只用单站就能实现TDOA无源定位的理论尚未有人探讨。该文就本着这一思路探讨了在机动单站的情况下,如何利用TDOA方法实现精确的无源定位,并推导了已知定位舰具体信息情况下获取几何精度衰减因子(GDOP)的计算公式,根据推出的公式写出了获取GDOP的等高线图的计算机实现软件流程,并在计算机上根据相应数据进行了仿真。通过对获得的GDOP的等高线仿真图和数据的观察分析,得出了相应的结论,同时也提出了改善定位精度的建议。The traditional method of time difference of arrival （TDOA） needs at least one detective station plus two assistant stations to realize localization. However, localization with single detective station has not been studied yet. Along this idea this paper studies how to achieve accurate passive source localization by using time difference of arrival measurements with only one motive station, and also induces the GDOP formula on condition that the specific locations of stations are known. The software flow getting geometric dilution of precision （GDOP） contour mappings is given and the corresponding program is executed in the computer. The observation and analysis of the result from the program produce valuable conclusions and proposals for improving the accuracy of localization.

关 键 词：无源定位 到达时间差定位 定位精度 几何精度衰减因子 

分 类 号：TN820.5[电子电信—信息与通信工程]