Modeling ionospheric effects with multiple reference stations for GPS satellite surveying

S. G. Lin, C. P. Tseng, W. L. Chiang, C. H. Tsai, C. W. Chen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Satellite surveying with the Global Positioning System (GPS) has shown several advantages over standard surveying techniques. However, because of some unmodeled systematic errors, the possibility of successful ambiguity resolution is poor in the processing of long baseline vectors. Therefore, the methods of modeling ionospheric errors and increasing measurement equations are proposed with multiple reference stations. There are two proposed method of estimating ionospheric delays; one is linear interpolation according to the positions of reference and rover stations, another is the least squares method considering a slant function. On the other hand, a network with several reference points can provide several known positions to form more baselines to rovers, so more degrees of freedom are available by increasing measurement equations of baselines. These baselines would be processed in a matrix system. Finally, for verification, three experiments were carried out. The results show that the proposal concept is helpful to ambiguity resolution and GPS surveying both with L1 frequency and dual-frequency data. The purpose of this paper is to evaluate the help of multiple reference stations for GPS surveying.

Original languageEnglish
Title of host publicationProceedings of the 17th IASTED International Conference on Modelling and Simulation
Pages68-73
Number of pages6
StatePublished - 2006
Event17th IASTED International Conference on Modelling and Simulation - Montreal, QC, Canada
Duration: 24 May 200626 May 2006

Publication series

NameProceedings of the IASTED International Conference on Modelling and Simulation
Volume2006
ISSN (Print)1021-8181

Conference

Conference17th IASTED International Conference on Modelling and Simulation
Country/TerritoryCanada
CityMontreal, QC
Period24/05/0626/05/06

Keywords

  • Baseline
  • Global Positioning System (GPS)
  • Ionospheric delays
  • LI frequency

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