附加约束法在单频GPS快速静态定位中的应用  

The Method of Restricted Condition and Its Application for Single Frequency GPS in Rapid Static Positioning

作　　者：刘立龙[1] 文鸿雁[2] 谢劭峰[2] 

机构地区：[1]广西建筑工程检测与试验重点实验室,广西桂林541004 [2]桂林工学院土木工程系,广西桂林541004

出　　处：《湖南科技大学学报（自然科学版）》2008年第2期88-91,共4页Journal of Hunan University of Science And Technology：Natural Science Edition

基　　金：国家自然科学基金资助项目(40574002);广西青年科学基金资助项目(0728097);广西建筑工程检测与试验重点实验室项目(桂科能07109005-07)

摘　　要：针对在短时间内GPS观测方程的法方程容易形成病态的实际,探讨用附加约束条件来消除其病态性的方法,然后用LAMBDA方法确定其整周模糊度,实验证明,对于单频GPS接收机,利用5个历元数据,使用该技术即可正确确定整周模糊度,从而实现厘米级定位.The normal equation of GPS observation equations in short time observation are usually ill condition, the correlated study is performed. The method of restricted condition is used to eliminate the ill condition of the normal equation, and the LAMBDA method is used to fix the integer ambiguity. The corresponding experiments have been executed based on these techniques. The experiments results show that, for single frequency GPS receiver, the fixed ambiguity can be finished in 5 epochs and centimeter-level of positioning accuracy is achieved. 2figs., 11refs.

关 键 词：附加约束法 LAMBDA 快速定位 GPS算法 

分 类 号：P228.41[天文地球—大地测量学与测量工程]