短距离GPS工程控制网的有关设计问题  

Project Problem of Short Range GPS Engineering Control Net

作　　者：郑汉球 

机构地区：[1]中国建材工业地质勘查中心

出　　处：《测绘工程》1998年第2期1-5,共5页Engineering of Surveying and Mapping

摘　　要：在推导短距离GPS测相双差观测方程的近似表达式的基础上，分析了卫星几何状态与基线位置对短基线解精度的影响，结合北京地铁复八线GPS控制两资料分析，提出了工程及城市控制网的有关网型设计原则。On the basis of derivation of an approximate expression of double difference observation equation for the carrier phase measurements the paper has been analysed an influcnce of satellites geometric state on the short range baseline vectors. Combining with the analysing of GPS control net of Beijing underground for the FusingmenBawangfen line, the author has been advanced GPS network project principles for the engineering and urban control net.

关 键 词：GPS 工程控制网 测相 双差观测方法 短距离 

分 类 号：P228[天文地球—大地测量学与测量工程]