利用GPS水准点精化局部CQG2000  

Using GPS/level data to advance the precise of local CQG2000

作　　者：李冲[1] 张勤[1] 季灵运[1] 刘站科[1] 

机构地区：[1]长安大学地质工程与测绘工程学院

出　　处：《测绘科学》2008年第4期63-64,17,共3页Science of Surveying and Mapping

基　　金：地球空间环境与大地测量教育部重点实验室项目(1469990324233-04-02);交通部科技项目(200531881203)

摘　　要：CQG2000模型的精度仍不能满足中、大比例尺的测图需要,如何充分利用现有成果,提高其价值和实用性,是目前需要迫切解决的问题。本文提出了通过加密GPS水准点来提高现有CQG2000精度的方法,并研究了GPS水准点数目和分布对提高结果的影响。CQG2000 doesn＇t have enough precision for obtaining medium-scale and large-scale relief map, how to use the actual result adequately, advance its value and practicability is a very important problem that needs to resolve urgently. The text has put for- ward a method to advance the precise of CQG2000 by integrating the GPS/level, the influence of the number and distributing of GPS/ level points has been researched.

关 键 词：大地水准面 GPS水准 多项式法 最小二乘拟合推估 

分 类 号：P223[天文地球—大地测量学与测量工程]