Inter-system biases in GPS and BDS combined relative positioning by double-differenced observations

被引：10
|
作者：
Liu, Jinhai [1 ,3 ]
Tu, Rui [1 ,2 ,3 ]
Han, Junqiang [1 ,2 ]
Zhang, Rui [1 ,2 ]
Zhang, Pengfei [1 ,3 ]
Fan, Lihong [1 ,2 ]
Lu, Xiaochun [1 ,2 ,3 ]
机构：
[1] Chinese Acad Sci, Natl Time Serv Ctr, Shu Yuan Rd, Xian 710600, Shaanxi, Peoples R China
[2] Chinese Acad Sci, Key Lab Precis Nav Positioning & Timing Technol, Xian 710600, Shaanxi, Peoples R China
[3] Univ Chinese Acad Sci, Yu Quan Rd, Beijing 100049, Peoples R China
来源：
MEASUREMENT SCIENCE AND TECHNOLOGY | 2019年 / 30卷 / 08期
基金：
中国国家自然科学基金;
关键词：
GPS; BDS; GNSS; double-differenced observations; combined positioning; inter-system biases; GALILEO;
D O I：
10.1088/1361-6501/ab1cb0
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effects of inter-system biases (ISBs) in multi-global navigation satellite system (GNSS) combined positioning cannot be ignored in zero-differenced observations. Furthermore, for relative positioning of multi-GNSS from double-differenced observations, there also exists double-differenced ISB, and the influence on precise relative positioning cannot be ignored. The characteristics of double-differenced ISBs are analyzed by using a large volume of global positioning system (GPS) and BeiDou Navigation Satellite System (BDS) data for differential relative positioning. Different baselines result in different double-differenced ISBs; ISBs obtained from different days show consistency and periodicity for the same baseline. We propose a parameter estimation approach to realize consistency of relative positioning results for different GNSS systems, and thus improve their usability. The results show that the double-differenced ISBs are stable for the same period of time over consecutive days, and can be used for modeling and prediction.
引用
收藏
页数：12
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