单频GPS接收机整周模糊度快速动态解算方法研究  

The algorithm of rapid dynamic ambiguity resolution for single frequency GPS receiver

作　　者：刘立龙[1] 刘斌[1] 文鸿雁[1] 

机构地区：[1]桂林工学院土木工程系,广西桂林541004

出　　处：《测绘科学》2008年第6期127-129,共3页Science of Surveying and Mapping

基　　金：国家自然科学基金项目(40574002);广西区自然科学基金项目(0542002);广西区青年科学基金项目(0728097)

摘　　要：本文提出了一种快速动态解算单频GPS接收机整周模糊度的方法,其基本思想是对系数阵进行QR分解,通过矩阵变换使模糊度参数和位置参数分离,降低矩阵维数,并采用了一种残差二次型的快速算法。针对单频GPS接收机数据进行了静态和动态两种实验,本文算法达到静态误差小于1cm、动态误差小于5cm的精度,表明对于动态用户,该方法是快速和有效的,可应用于高精度导航和动态定位。GPS carder phase integer ambiguity rapid resolution is still the key issue and challenge tor high accuracy survey and navigation, especially for single frequency receiver. The algorithm of rapid dynamic ambiguity resolution is presented in this paper. A method of QR decomposition is applied to separate the ambiguity parameter from the position parameter and decrease dimensions of the matrix to satisfy rapid ambiguity resolution. The computational efficiency of residual error quadrate is improved. The algorithm is applied to two different types of real data to show its effectiveness. Experimental results show that the proposed method is fast and efficient for relative positioning of a moving user. The method may be used in areas requiring accurate positioning such as navigation and geodesy.

关 键 词：GPS载波相位测量 整周模糊度 QR分解 矩阵变换 

分 类 号：P228[天文地球—大地测量学与测量工程]