基于地统计学的GPS高程异常拟合研究  

Resarch on Method of GPS Height Abnormal Fitting based on Geostatistical Analysis

作　　者：周长江[1] 纪志鹏[1] 

机构地区：[1]中国矿业大学环境与测绘学院,江苏徐州221008

出　　处：《全球定位系统》2012年第1期69-73,共5页Gnss World of China

基　　金：土地监管数据空间位置配标准技术研究(编号201011015-2)

摘　　要：地统计学(Geostatistical Analysis)是一门以区域变化量理论为基础,以变异函数为主要工具,研究分布于空间上既有随机性又有结构性的自然或社会现象的科学,它遵从空间位置相近的地理现象具有相似属性值。GPS点的高程异常在区域内随点平面位置的变化而变化,具有一定的空间相关性。因此,可以将地统计中的相关插值方法应用到GPS高程异常拟合中。通过对地统计原理的分析,结合实例比较了ArcGIS中地统计分析中的相关插值方法在GPS高程异常拟合中的精度情况。Geostatistical is a kind of knowledge which is based on the theory of regional change and takes variogram as main tool to research those nature or social phenomenon dis- tributed in spatial that has both randomness and structure. It defers to that closed geographic location has similar properties. Height abnormal of GPS point changes with the variation of plane position in a region. Then it is possible to obtain the GPS height abnormal with the principle of geostatistical analysis. According to the principle of different method of geostatis- tial analysis, and their accuracy is compared by some example.

关 键 词：GPS高程异常 正常高 地统计分析 克里金插值 

分 类 号：P228.4[天文地球—大地测量学与测量工程]