一种整周模糊度快速求解的分组搜索法  

A RAPID INTEGER AMBIGUITY SOLUTION——GROUP-SEARCH METHOD

作　　者：晏红波[1] 任超[1] 卢献健[1] 

机构地区：[1]桂林理工大学土木与建筑工程学院,桂林541004

出　　处：《大地测量与地球动力学》2011年第3期94-97,共4页Journal of Geodesy and Geodynamics

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

摘　　要：针对实际工作中观测条件较差的GPS卫星整周模糊度难以固定的问题,提出了模糊度快速求解的分组搜索法。首先将模糊度分为主模糊度和从模糊度两组,然后在固定主模糊度组的基础上,考虑从模糊度组能否固定。利用实际算例验证了该方法的有效性。An ambiguity group-searching method is brought forward.At first,decomposing the ambiguities into two groups according to their variance can reduce the influence caused by the low precision floats and minimize the searching space efficiently.Moreover,a new verification by comparing the search output is used in ambiguity validation.The results of the experiments indicate that the new method can efficiently reduce searching space,increase searching speed and enhance the success rate of ambiguity resolution.

关 键 词：整周模糊度 快速求解 分组搜索 主模糊度 从模糊度 

分 类 号：P207[天文地球—测绘科学与技术]