三维时差定位系统的模糊及无解分析

针对四站三维时差定位系统,分析了一种在非线性方程组精确求解方法的定位过程中可能出现的模糊和无解问题.根据不同布站及目标高度条件下的模糊分布仿真结果,找出了模糊分布与布站及目标高度之间的规律,并给出了一些模糊现象处理方法及处理仿真结果;根据不同布站、噪声强度及目标高度条件下的无解分布仿真结果,得出了无解分布与布站、噪声强度及目标区高度之间的关系,并提供了无解现象处理方法.

Study on Ambiguity and Non-solution of 3-D TDOA Location Systems

In this article ,based on 3 - D 4 - station TDOA position location systems ,the problems of ambiguity and non-solution of solving a non -linear equations are studied. According to the simulation results of different placement of stations and target height, we find out the correlation of ambiguity with the placement of stations and target height and present some solutions of ambiguity and simulation results. According to the stimulation results of different placement of stations ,location error and target height ,we find out the correlation of non -solution with the placement of stations ,location error and target height and present solution of non - solution.