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An Advanced Receiver Autonomous Integrity Monitoring (ARAIM) Ground Monitor Design to Estimate Satellite Orbits and Clocks

Published online by Cambridge University Press:  28 April 2020

Yawei Zhai Open the ORCID record for Yawei Zhai [Opens in a new window] ,
Jaymin Patel ,
Xingqun Zhan ,
Mathieu Joerger  and
Boris Pervan
Yawei Zhai*
Affiliation:
(Shanghai Jiao Tong University, Shanghai, China)
Jaymin Patel
Affiliation:
(Illinois Institute of Technology, Chicago, USA)
Xingqun Zhan
Affiliation:
(Shanghai Jiao Tong University, Shanghai, China)
Mathieu Joerger
Affiliation:
(The University of Arizona, Tucson, USA)
Boris Pervan
Affiliation:
(Illinois Institute of Technology, Chicago, USA)
*
(E-mail: yawei.zhai@sjtu.edu.cn)
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Abstract

This paper describes a method to determine global navigation satellite systems (GNSS) satellite orbits and clocks for advanced receiver autonomous integrity monitoring (ARAIM). The orbit and clock estimates will be used as a reference truth to monitor signal-in-space integrity parameters of the ARAIM integrity support message (ISM). Unlike publicly available orbit and clock products, which aim to maximise estimation accuracy, a straightforward and transparent approach is employed to facilitate integrity evaluation. The proposed monitor is comprised of a worldwide network of sparsely distributed reference stations and will employ parametric satellite orbit models. Two separate analyses, covariance analysis and model fidelity evaluation, are carried out to assess the impact of measurement errors and orbit model uncertainty on the estimated orbits and clocks, respectively. The results indicate that a standard deviation of 30 cm can be achieved for the estimated orbit/clock error, which is adequate for ISM validation.

Keywords

Advanced Receiver Autonomous Integrity Monitoring (ARAIM)Integrity Support Message (ISM) ValidationOffline Monitor
Type
Research Article
Information
The Journal of Navigation , Volume 73 , Issue 5 , September 2020 , pp. 1087 - 1105
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Copyright
Copyright © The Royal Institute of Navigation 2020

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