附加约束法及其在GPS快速定位中的应用  

The method of restricted condition and its application in rapid GPS positioning

作　　者：刘立龙[1] 刘基余[1] 李光成 

机构地区：[1]武汉大学测绘学院,武汉430079 [2]北京遥测技术研究所,北京100076

出　　处：《测绘科学》2005年第5期38-39,42,共3页Science of Surveying and Mapping

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,实际实验证明,对于单频GPS接收机,利用连续几个历元数据,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。Aiming at the ill condition in the normal equation of GPS observation in short period,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 results show that,for single frequency GPS receiver,the ambiguity can be fited in several epochs and centimeter-level positioning is achieved.

关 键 词：附加约束法 LAMBDA方法 快速定位 GPS算法 

分 类 号：P228[天文地球—大地测量学与测量工程]