基于多余观测分量的整周模糊度可靠性检验方法  

Reliability Test Method of Ambiguity Based on Redundant Observation Component

作　　者：闫志跃[1] 喻国荣[1] 杨徉[1] 

机构地区：[1]东南大学交通学院,南京210096

出　　处：《航天控制》2015年第3期88-93,98,共7页Aerospace Control

摘　　要：针对常规模糊度检验三步法中存在的错误模糊度整数解漏检的情况,分析了错误整周模糊度、观测值残差及多余观测分量矩阵之间的内在联系,阐述了参考星变化对多余观测分量矩阵主对角线元素的影响,进而提出了一种基于多余观测分量的整周模糊度可靠性检验方法。该方法根据多余观测分量主对角线占优原则实现部分卫星的模糊度可靠性检验。对于多余观测分量主对角线不占优的卫星,利用多余观测分量绝对值最大的情况进行整周模糊度可靠性检验,从而完成所有卫星的模糊度可靠性检验。Aimed at the undetected case of wrong integer ambiguity solutions by using three - step approach in conventional ambiguity test, the internal relationships among wrong integer ambiguity, residuals and re- dundant observation component matrices are analyzed in this paper. Then the influence of the changes of ref- erenced satellites on the principal diagonal elements in redundant observation component matrix is expoun- ded. A reliability test method of ambiguity based on redundant observation component is proposed in this pa- per. The ambiguity reliability test of part of satellites is firstly realized by using this method on the basis of the principle that the main diagonal elements are dominant in the redundant observation component matri- ces. Besides, for the other satellites, the max absolute value is used in the redundant observation component matrices to inspect the reliability of ambiguity.

关 键 词：整周模糊度 可靠性检验 多余观测分量 基线解算 

分 类 号：V249.3[航空宇航科学与技术—飞行器设计]