GPS 动态伪距单点定位精度与 GDOP 的关系  

On the Relationship between Error of Single Point Positioning and Geometry Dilution of Positioning (GDOP)

作　　者：王解先[1] 季善标[2] 易玉丹 

机构地区：[1]同济大学 [2]上海测绘院

出　　处：《工程勘察》1998年第6期50-52,45,共4页Geotechnical Investigation & Surveying

摘　　要：给出ＧＰＳ伪距动态单点定位的计算公式，分析单点定位误差与几何强度因子ＧＤＯＰ之间的关系，并研究了当观测卫星数仅为必要的４颗时定位精度的降低情况，画出了ＧＤＯＰ与平面定位精度之间的等值线关系图，并研究了ＧＤＯＰ与定位精度之间的相关性。In this paper, the kinematic positioning formula using GPS pesudorange is given. The relationship between error of single point positioning and geometry dilution of positioning(GDOP) is analysed. The worse situation in which only 4 pesudoranges are used in positioning is introduced. The relation contour between plane error of positioning and GDOP is given. Also studied is the correlation between positioning accuracy and GDOP.

关 键 词：GPS 伪距动态定位 GDOP 车辆管理 

分 类 号：P228[天文地球—大地测量学与测量工程] U492.22[天文地球—测绘科学与技术]