Stochastic model of GPS/BD combined standard single point positioning

Wenkun Yu, Wujiao Dai, Xiaoli Ding, Wentao Yang, Xiao Gao

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

4 Citations (Scopus)


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.
Original languageEnglish
Title of host publicationProceedings - 3rd China Satellite Navigation Conference, CSNC 2012, Revised Selected Papers
Number of pages10
Publication statusPublished - 5 Jun 2012
Event3rd China Satellite Navigation Conference, CSNC 2012 - Guangzhou, China
Duration: 15 May 201219 May 2012

Publication series

NameLecture Notes in Electrical Engineering
Volume159 LNEE
ISSN (Print)1876-1100
ISSN (Electronic)1876-1119


Conference3rd China Satellite Navigation Conference, CSNC 2012


  • GPS/BD
  • Robust Helmert
  • Stochastic model

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering


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