东南大学学报（自然科学版）2013，Vol.43Issue(4)：753-757,5.DOI:10.3969/j.issn.1001-0505.2013.04.015
GNSS多系统基线解算中的病态性分析与评价
Analysis and valuation of ill-condition in baseline solution of GNSS multi-system
摘要
Abstract
Aiming at the different situations of satellites orbital altitude and angular velocity in GNSS (global navigation satellite system) multi-system,the ill-condition in baseline solution was analyzed and evaluated combined with the analysis theory on ill-conditioned system.First,the effect of illcondition on the solution of parameters was analyzed.Then,form the viewpoint of satellites' angular velocities,the ill-condition in independent baseline solution of the GPS (global positioning system),GLONASS (global navigation satellite system) and BDS (Beidou navigation satellite system) under different baseline-length data was studied by using the condition-number method.Finally,the illcondition in multi-system integration was valuated.The experimental results show that the GLONASS satellites run fastest,so the ill-condition is the weakest and the coefficient matrix structure is the best.However,the ill-condition of the current BDS which mainly consists of high-orbit satellites is the strongest.Besides,the ill-condition in baseline solution is not related with the baseline length.For multi-system integration,the coefficient matrix structure is not obviously affected by the serious ill-condition of the BDS,which is conducive to the fast convergence of ambiguities resolution in baseline solution of the BDS.关键词
GNSS多系统/基线解算/病态性/条件数Key words
GNSS (global navigation satellite system) multi-system/baseline solution/ill-condition/condition number分类
天文与地球科学引用本文复制引用
王胜利,王庆,高旺,潘树国..GNSS多系统基线解算中的病态性分析与评价[J].东南大学学报（自然科学版）,2013,43(4):753-757,5.基金项目
"十二五"国家科技支撑计划资助项目(2012BAJ23B01). （2012BAJ23B01）
