区域GPS网与地面网3维联合处理

Three-dimensional Combined Processing of Regional GPS and Terrestrial Networks

随着 GPS和传统地面测量技术的发展 ,两种技术的组合应用常常是适宜的选择。显然 ,有关 GPS网与地面网联合处理的研究在 GPS测量技术应用中是重要的。本文对区域 GPS网与地面网 3维联合平差方法进行了研究 ,给出了相应的函数模型 ,解决了经典 3维平差中天文经纬度缺乏和垂直折光差改正两个关键技术问题。此外 ,为节省计算机存储和运算时间 ,笔者建议采用变带宽存储法和剖面极小化算法。文章的最后简要介绍了 CPSTGD数据处理软件。

With the development of GPS and traditional surveying techniques, the combined use of GPS and traditional surveying techniques might be the optimal choice in many cases. Hence the research on the combination of GPS and terrestrial networks is important in applying GPS surveying technique. The paper studies the method of three dimensional combined adjustment of regional GPS and terrestrial networks, presents the corresponding functional models, and solves two key problems about the lack of astronomical latitudes and longitudes and the vertical refraction correction in the classical three dimensional adjustment. Besides, in order to save computer storage and reduce execution time, the authors suggest to use the variable band data structure storage and the algorithm for minimizing column profile of sparse symmetric matrices. Finally, the data processing software CPSTGD is briefly introduced.