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A Robust Method for GPSBDS Pseudorange Differential Positioning Based on the Helmert Variance Component Estimation
Joint Authors
Zhang, Aiguo
Deng, Jian
Zhao, Xingwang
Ke, Fuyang
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-12-17
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
The use of global navigation satellite system (GNSS) is entering a new era of joint positioning based on the use of multifrequencies and multimodes.
Ensuring the correct weighting of observations from each system and satellite has become a key problem during real-time positioning.
This paper addresses the issue of weights of observations as well as the quality control of GPS/BDS pseudoranges in the context of real-time relative positioning.
Thus, in the first place, the Helmert variance component estimation (VCE) is used to determine the relative weighting of observations from the two systems, and then, we introduce robustness estimation theory and construct a new method.
The method is resistant to the influence of outliers in the observations by selecting weight iterations.
To do this, we selected GPS/BDS observation data at baseline lengths of 40 km, 46 km, and 64 km for verification and analysis.
Experimental results show that, in terms of the relative positioning of medium-to-long baseline based on GPS/BDS pseudorange observations, when observed values incorporate large gross errors, our method can reduce the weighting of suspicious or abnormal values and weaken their impact on positioning solutions, so that the positioning results will not appear to have large deviation.
American Psychological Association (APA)
Deng, Jian& Zhao, Xingwang& Zhang, Aiguo& Ke, Fuyang. 2017. A Robust Method for GPSBDS Pseudorange Differential Positioning Based on the Helmert Variance Component Estimation. Journal of Sensors،Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1187450
Modern Language Association (MLA)
Deng, Jian…[et al.]. A Robust Method for GPSBDS Pseudorange Differential Positioning Based on the Helmert Variance Component Estimation. Journal of Sensors No. 2017 (2017), pp.1-8.
https://search.emarefa.net/detail/BIM-1187450
American Medical Association (AMA)
Deng, Jian& Zhao, Xingwang& Zhang, Aiguo& Ke, Fuyang. A Robust Method for GPSBDS Pseudorange Differential Positioning Based on the Helmert Variance Component Estimation. Journal of Sensors. 2017. Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1187450
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1187450