Computation and quality control of differential GPS corrections

Xin Xiang Jin*, Hans van der Marel, Cees de Jong

*Corresponding author for this work

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

1 Citation (Scopus)

Abstract

The DGPS technique can considerably improve the accuracy of stand-alone GPS positioning, but the improvement depends on the distance between the user and the reference station (spatial correlation), the latency of differential corrections (temporal correlation), and the quality of differential corrections. Therefore, how to correctly generate differential corrections as well as their precision is one of the keys to the DGPS positioning technique. This paper presents a new algorithm for generating differential GPS corrections. This algorithm directly uses code and carrier observations in the measurement model of a Kalman filter, so that it is possible to use a simple stochastic observation model and to use the standard algorithm of the Kalman filter. The algorithm accounts for biases like multipath errors and instrumental delays in code observations and it clearly shows how differential corrections are differently affected by code biases when dual or single frequency data are used. In addition, the algorithm can be integrated with a recursive quality control procedure. As a consequence, the quality of differential corrections can be guaranteed with certain probability.

Original languageEnglish
Title of host publicationProceedings of the 1995 8th International Technical Meeting of the Satellite Division of the Institute of Navigation. Part 1 (of 2)
Subtitle of host publicationPalm Springs, CA, USA; ; 12 September 1995 through 15 September 1995
PublisherInstitute of Navigation
Pages1071-1079
Number of pages9
Publication statusPublished - 1995
EventProceedings of the 1995 8th International Technical Meeting of the Satellite Division of the Institute of Navigation. Part 1 (of 2) - Palm Springs, CA, USA
Duration: 12 Sept 199515 Sept 1995

Conference

ConferenceProceedings of the 1995 8th International Technical Meeting of the Satellite Division of the Institute of Navigation. Part 1 (of 2)
CityPalm Springs, CA, USA
Period12/09/9515/09/95

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