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Title: Stochastic model of GPS/BD combined standard single point positioning
Authors: Yu, W
Dai, W
Ding, X 
Yang, W
Gao, X
Keywords: GPS/BD
Robust Helmert
Stochastic model
Issue Date: 2012
Publisher: Springer
Source: Lecture notes in electrical engineering, 2012, v. 159 LNEE, p. 325-334 How to cite?
Journal: Lecture notes in electrical engineering 
Abstract: Reasonable determination of weights is the key factor in giving full play to advantages of GPS/BD combined system. Generally, Helmert VCE (Variance Component Estimation) is employed aiming at adjusting the variance-ratio between the two heteroscedastic systems. Besides, the precise priori weight matrix can enhance the convergence of iteration methods based on posteriori information, reduce the iteration's times. However, system related errors, together with outliers, influence the estimation, leading to a distorted stochastic model. Therefore, in this paper, based on Robust Helmert VCE and using integrated priori accuracy, taking various error sources into consideration, an initial weighting method for combined system is suggested.
Description: 3rd China Satellite Navigation Conference, CSNC 2012, Guangzhou, 15-19 May 2012
ISBN: 9783642291869
ISSN: 1876-1100
EISSN: 1876-1119
DOI: 10.1007/978-3-642-29187-6_32
Appears in Collections:Conference Paper

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