科研软件与商用软件在长江干流航道GPS测量控制网数据处理中的结果分析  

Analysis of Data Processing Results of GPS Control Network in the Main Waterway of the Yangtze River by Research Software and Business Software

作　　者：李国祥 曾旭平[2] 何传金 

机构地区：[1]长江航道局,湖北武汉430010 [2]武汉大学GPS中心,湖北武汉430079

出　　处：《水运工程》2004年第7期6-8,共3页Port & Waterway Engineering

摘　　要：利用GPS静态观测组成的同步环,当采用高精度的科研软件与常用商用软件解算基线时,由于解算基线向量的数学模型不同,致使其方差阵不同,前者解算的方差阵结构完全、严密。在进行GPS网平差时,两种软件在同种情况下的平差结果也有所差别。本文利用长江中下游航道一特大型GPSC级测量控制网的观测数据,着重将两种软件解算的基线和网平差结果进行了比较分析,得出了一些有益的建议和结论。A GPS network comprises several simultaneous observable loops. The covariance matrices of GPS baselines processed by GPS research software are different from those by GPS business software because of different mathematical models. The former covariance structure is more integrated and rigorous. Meanwhile, a different software leads to a different adjustment result in case of using the same GPS network. This paper focuses on the comparison and analysis of baselines′ processing and GPS network adjustment with the observable data of extensive GPS order C in the waterways of the middle and lower Yangtze River and then gives useful suggestions and conclusions.

关 键 词：GPS基线解算 GPS网平差 方差阵 精度分析 

分 类 号：TP31[自动化与计算机技术—计算机软件与理论]