一种整周模糊度快速求解的改进LAMBDA方法  

An improved LAMBDA method for fast ambiguity fixing

作　　者：任超[1] 王霜 

机构地区：[1]桂林工学院土木工程系,广西桂林541004 [2]宜昌公路管理局,湖北宜昌443000

出　　处：《测绘科学》2010年第4期120-121,135,共3页Science of Surveying and Mapping

基　　金：国家自然科学基金项目(40574002);广西自然科学基金项目(桂科自0640178)

摘　　要：本文提出了一种改进LAMBDA方法:在确定Z变换后的模糊度时,改变以往对所有历元的模糊度全部进行搜索的做法,而是通过设置合理的条件,将搜索与直接归整有效地结合起来,从而减少了模糊度的解算时间,提高了解的效率。文章最后利用实测GPS数据验证了改进效果。An improved LAMBDA method for GPS integer ambiguity estimation was proposed in this paper. To be different with the conventional LAMBDA method, the proposed method fixed the transformed ambiguity float solutions not just by the integer least-squares search method, but by taking the combined ways of rounding and searching. It took less time to resolve the ambiguity than LAMBDA and improved the efficiency of the ambiguity resolution. At last one real-data experiment was given to testify the proposed method.

关 键 词：GPS 整周模糊度 LAMBDA 取整 

分 类 号：P228[天文地球—大地测量学与测量工程]