利用TGO进行灾区GPS控制网平差的一种有效方法  

A Valid Method of Using TGO Adjusting Disaster Area GPS-net

作　　者：李冲[1,2] 谭理 

机构地区：[1]武汉大学测绘学院,湖北武汉430079 [2]国家测绘产品质量监督检验测试中心,四川成都610041

出　　处：《城市勘测》2010年第6期93-95,共3页Urban Geotechnical Investigation & Surveying

摘　　要：利用TGO软件进行GPS网基于参心坐标系的二维约束平差时,如果起算点距离测区较远,则常规的平差设置方法不能获得良好的结果,笔者通过大量的实践摸索发现,此时若同时固定任一网点的高度值,平差结果精度则显著提高,本文通过一具体算例介绍了该方法并探讨了其特点和可靠性。If the known point is far away from the surveying area,general adjustment method will not get satisfying result,when using TGO to make tightened two-dimension adjustment based on reference coordinates.By a mass of practice and research,the author find that,if we tighten the height of a random net point at the same time,the precision of the result will promote markedly,the text has introduced this method by an example,its character and reliability has been discussed too.

关 键 词：TGO GPS网平差 起算点 平差精度 

分 类 号：P228[天文地球—大地测量学与测量工程]