布站方式对基于TDOA的干扰源定位影响分析

介绍了到达时间差(TDOA)算法的基本原理,并分析了定位存在模糊解区域和无解区域的原因。对二维不同布站条件下的模糊解区域进行仿真,得到了不同角度、不同基线长度布站方式下的模糊解区域分布,总结了布站方式对二维模糊解区域分布的影响。基于TDOA的几何精度因子(GDOP)方法分析了基线长度和布站形状对定位精度的影响,在四站三维条件下对不同布站形式下的定位精度进行仿真和分析,得出了不同布站条件下GDOP的分布规律,为实际工程应用中的接收机布站提供了参考。

Analysis of the Influence of Station Layout on the Location of Interference Source Based on TDOA

This paper introduces the basic principle of TDOA algorithm, and analyzes the reason of locating fuzzy solution region and non-solution region. By simulating the fuzzy solution region under different two-dimensional station distribution conditions, the regional distribution of fuzzy solution under different angle and different baseline length is obtained, and the influence of different stations distribution on the regional distribution of two-dimensional fuzzy solution is summarized. The effects of baseline length and station shape on positioning accuracy are analyzed by TDOA based geometric dilution of precision (GDOP) method. Under the condition of four stations and three dimensions, the positioning accuracy of different stations is simulated and analyzed. The distribution law of geometric dilution of precision under different conditions of station distribution is obtained, which provides a reference for receiver station distribution in practical engineering application.