摘要
在GPS高程转换中,位置信息通过观测手段获得,在平差处理中,系数矩阵和观测向量都存在误差。在阐述总体最小二乘平差原理的基础上,以常用的GPS高程转换模型为基础,利用某城市实测GPS数据,证明了总体最小二乘方法在GPS高程转换方面的优势性:模型更合理;精度更高;复杂地形的精度改善更明显。
In the GPS height transformation,the position information is obtained by means of observation. In the adjustment processing,it is also related to the situation that the coefficient matrix and the observation vector have the error. On the base of expounding total least squares adjustment,this paper proves the superiority of the total least squares method in GPS height transformation,based on the commonly used GPS height transformation model,using GPS data from one city. The superiority is more reasonable model;higher accuracy; more obvious accuracy improvement of complex terrain.
出处
《测绘与空间地理信息》
2016年第3期105-109,共5页
Geomatics & Spatial Information Technology
关键词
总体最小二乘
GPS
高程转换
适用性
total least squares
GPS
height transformation
applicability
