摘要
针对目前双频伪距与相位观测值线性组合法(MW法)固定BDS/GPS宽巷模糊度所需平滑历元个数多的问题,提出一种附有北斗超宽巷约束的BDS/GPS几何相关的宽巷模糊度固定方法。利用伪距载波组合确定出北斗(0,-1,1)超宽巷模糊度并回代到观测方程,将超宽巷观测方程作为约束条件与BDS/GPS宽巷观测方程联立,以共有的位置参数将上述观测信息融合单历元固定BDS/GPS宽巷模糊度。基于实测数据结果表明,相对于常规的MW法,采用本文提出的有几何BDS/GPS宽巷模糊度固定方法,能够提高BDS/GPS宽巷模糊度的解算精度和时效性,适合中短基线且电离层不活跃情况下BDS/GPS宽巷模糊度的解算。
According to the defect that double frequency carrier pseudorange observation linear combination method（MW method）needs many epochs smoothing to fix BDS/GPS wide lane ambiguity,a kind of BDS/GPS wide lane ambiguity fixed algorithm using geometry based model with BeiDou extra wide lane constraint is proposed in this paper.First,BeiDou（0,-1,1）extra wide lane was solved by carrier pseudorange combination,then using BeiDou extra wide lane observation equation as a constraint combined with BDS/GPS wide lane equation,using the same parameters for information fusion to fix BDS/GPS wide lane ambiguity by single epoch.In this paper the geometry based model is proposed to fix BDS/GPS wide lane ambiguity by using real data,the result shows that,compared with MW method,this method can improve the accuracy and timeliness of BDS/GPS wide lane ambiguity resolution,is suitable for fixing BDS/GPS wide lane ambiguity of medium and inactive ionosphere baselines.
作者
胡惠卿
高成发
潘树国
夏炎
王彦恒
HU Huiqing;GAOChengfa;PAN Shuguo;XIA Yan;WANG Yanheng(School of Transportation, Southeast University, Nanjing 210096, China;School of Instrument Science and Engineer- ing, Southeast University, Nanjing 210096, China)
出处
《测绘科学》
CSCD
北大核心
2018年第5期127-132,154,共7页
Science of Surveying and Mapping
基金
国家重点研发计划项目(2016YFB0502101)
国家自然科学基金项目(41574026)
江苏省重点研发计划项目(BE2016176)
