GPS空间位置精度因子模糊分析

Fuzzy Processing on GPS GDOP

高精度测量是GPS的重要特性,但由于各种因素的存在,所有GPS测量信息都存在着一定的误差,这说明GPS的读数并不能准确代表目标的真实位置。本文提出一种为提高GPS测量精度的模糊分析,比较本方法与简单的点平均,并提供了在S/A存在与不存在不同时间的真实试验数据,证明了本方法能比简单的点平均提供更精确的位置信息。

High accuracy is important factor for Global Positioning System （GPS）. Because of a variety of factors, all GPS collected points have certain amount of errors. This means that the location on the screen will not reflect the real location. This paper proposes fuzzy point averaging for better accuracy in GPS positioning. Performances between proposed fuzzy and simple point averaging are evaluated and compared. The experimental results with real data in various periods of time for Selective Availability （S/A） on and off, demonstrate that fuzzy point averaging is more accurate than simple point averaging.