削弱GDOP对WLAN无线定位精度影响的研究

摘要

削弱GDOP对定位精度的影响,是实现高精度WLAN无线定位的关键问题.针对有关问题进行了深入研究；首先对GDOP的数学理论进行了推导、分析,然后提出了采用残差加权方法可显著削弱GDOP对WLAN无线定位精度的影响,最后通过算法仿真证明了其合理性和有效性,可显著提高对MS的定位精度.对实现高精度的WLAN无线定位具有重要意义.%Weakening influence of GDOP for location accuracy is the key problem for realizing high accuracy WLAN wireless location.The related problems are studied thoroughly,and mathematics theory of GDOP are firstly deduced and analyzed,then it is proposed that adopting residual weighting algorithm can obviously weaken influence of GDOP for WLAN wireless location accuracy,finally by simulating,it proves its rationality and usefulness,and it can obviously enhance location accuracy of MS.This has important meaning for realizing high accuracy WLAN wireless location.