基于Kriging统计的GPS高程拟合方法研究  

RESEARCH OF GPS ELEVATION FITTING MODELS BASED ON KRIGING METHOD

作　　者：张小红[1] 程世来[2] 许晓东[2] 

机构地区：[1]武汉大学测绘学院,武汉430079 [2]武汉大学GPS工程技术研究中心,武汉430079

出　　处：《大地测量与地球动力学》2007年第2期47-51,共5页Journal of Geodesy and Geodynamics

基　　金：国家973计划(2003CB716705);国家863计划(2006AA12Z325)

摘　　要：从GPS高程测量应用于局部工程的问题着手,简述了GPS高程拟合原理,以传统的GPS高程拟合分别采用函数逼近模型和统计逼近模型为背景,提出了移动法曲面模型和多面函数模型下的Kriging(克里格)统计综合模型。通过某地区GPS水准网数据进行实验验证,结果表明:对于GPS高程拟合,该模型克服了单一统计模型和函数模型的不足,理论上更为完善,实践上其外符合精度比常规函数模型有显著提高。For solving the GPS elevation surveying problems in the local project, grounding on the principle of height translation as well as the traditional separate function model and statistical model of GPS height fitting, the model synthesized by moving surface model and polyhedral model for GPS elevation fitting based on Kriging method is presented. The GPS leveling experiment in certain area testifies to that this synthesized GPS elevation fitting model integrates the advantage of function model and statistical model, performs more perfectly in theory and improves the elevation precision distinctly in practice.

关 键 词：大地高 正常高 高程异常 高程拟合 KRIGING方法 

分 类 号：P224.2[天文地球—大地测量学与测量工程]