回代解算的LAMBDA方法及其搜索空间  

Return-calculating LAMBDA Approach and Its Search Space

作　　者：周扬眉[1] 刘经南[2] 刘基余[3] 

机构地区：[1]武汉大学GPS工程技术研究中心,湖北武汉430079 [2]武汉大学,湖北武汉430072 [3]武汉大学测绘学报,湖北武汉430079

出　　处：《测绘学报》2005年第4期300-304,共5页Acta Geodaetica et Cartographica Sinica

基　　金：国家自然科学基金资助项目(40174005)

摘　　要：基于回代解算的序贯条件最小二乘技术和上三角的Cholesky分解算法,提出求解载波相位模糊度的一种新算法———回代解算的LAMBDA方法。该方法同Teunissen提出的LAMBDA方法相比,有着不同的目标函数和不同的搜索空间。实例试算表明这两种方法有着不同的执行过程,但有着相同的模糊度整数解和相当的搜索效率。Based on the return-calculating sequential conditional least-squares technique and the upper-triangular Cholesky decomposition algorithm, a new approach to resolve GPS carrier phase integer ambiguity solution, which is referred as Return-Calculating LAMBDA approach, has proposed in this paper. This approach has a different objective function and a different search space from LAMBDA approach proposed by Teunissen. It is shown by an example that though these two approaches have different performance process, but they have the same integer ambiguity solution and the equivalent search efficiency.

关 键 词：GPS精密相对定位 相位模糊度整数解 CHOLESKY分解 LAMBDA方法 搜索空间 

分 类 号：P228.41[天文地球—大地测量学与测量工程]