GPS高程转换中大地高粗差探测方法  

Method of Gross Error Detection in GPS Height Transformation

作　　者：张兴福[1] 闫志港[2] 

机构地区：[1]同济大学测量系,上海200092 [2]中铁大桥局集团一公司测绘公司,郑州450053

出　　处：《工程勘察》2007年第4期56-58,62,共4页Geotechnical Investigation & Surveying

摘　　要：GPS高程转换中,大地高的精度将直接影响转换后正常高的精度,为此大地高的粗差探测是比较重要的一个环节。本文利用空间直角坐标和大地坐标的转换公式以及两者之间的微分关系式,来推求任意闭合环的大地高差闭合差,该方法可实现利用不同的闭合环的闭合差来探测和定位大地高粗差。算例结果表明,该方法是有效的。The accuracy of Orthometric Height will be directly affected by ellipsoidal height precision during GPS height transformation, therefore, the detection of gross error is very important. In this paper, the ellipsoidal height difference of closed poly line is calculated by the transformation formula and the differential formula between geodetic coordinates and space coordinates. This method is used for detecting and positioning the gross error through different closed poly line. The results show that this method is effective.

关 键 词：GPS 大地高 高程转换 粗差探测 

分 类 号：P228.4[天文地球—大地测量学与测量工程]