GPS在精密高程测量中的运用

The Applying Prospect of GPS in Precise Height Measurement

全球卫星定位系统GPS是具有全球性、全天候、全能性优势的导航定位系统,其可以提供三维坐标的优越性目前还未能得到充分发挥。分析了GPS高程测量中影响精度的主要因素,以及解决这些影响的一些方法;在GPS高程转换为正常的过程中,介绍两种转换方法即加权平均法和平差转换法;提出了提高 GPS高程测量精度必须注意的几个方面。

The advantages of 3 dimension coordinates by GPS has not been fully exerted. This paper introduces two transfer methods, that is to say, the method of averaging weights and the method of the adjustment transferring in the course of converting the GPS altitudes into normal altitudes by analyzing the main ingredients which affect the accuracy in the GPS height measurements and some methods of solving these influences. Several aspects is mentioned in improving the precision of GPS height measurement