摘要
局域差分中,用户到基准站的距离对定位精度有着决定性影响。利用基准站生成用户误差改正数,其算法很多,介绍了几种常用的方法,并分析了各方法的内插系数和内插质量因子。利用局域差分GPS进行定位时,只有当流动站位于基准站构成的多边形网内时,才可能得到较高的精度。
The distance from user to reference station influences the positioning accuracy definitively in local area differential GPS. There are many methods of using the data of reference station to calculate user error corrections. This paper introduces several common methods, and analyses interpolation coefficients and interpolation quality factors. Only if user station is in the polygon net forming by reference stations, positioning accuracy could be higher.
出处
《海洋测绘》
2007年第1期24-26,共3页
Hydrographic Surveying and Charting
关键词
局域差分GPS
加权平均法
线性内插法
低次曲面模型法
三角形内插法
local area differential GPS
weighted average method
linear interpolation method
low-order surface model
triangle interpolation algorithm
