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2018 | OriginalPaper | Chapter

3. Fundamentals of Integrity Monitoring

Authors : Letizia Lo Presti, Giulio Franzese

Published in: GNSS for Rail Transportation

Publisher: Springer International Publishing

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Abstract

This chapter describes the methods of integrity monitoring, necessary to verify if all the satellites involved in the PVT computation are healthy or not. In particular, we will see the solution adopted by a stand-alone receiver equipped with a system able to check if the hypothesis of nominal conditions (i.e. when all the satellites are healthy) can be considered valid. This is a fundamental step before evaluating the confidence interval associated to the estimated position. The reason why integrity monitoring is a necessary step for the evaluation of the confidence interval is briefly described in Sect. 3.1, while the remainder of the chapter is devoted to the methods of fault detection (FD), and fault detection and exclusion (FDE), generally implemented in the algorithms of receiver autonomous integrity monitoring (RAIM) systems.

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previous chapter Review of Common Navigation Algorithms and Measurements Errors
next chapter Evaluation of the Confidence Intervals
Footnotes
1
In [4] this is called predicted range. We prefer to adopt the term reconstructed or computed range, proposed by other authors, [5], as it seems more adequate.
 
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Metadata
Title
Fundamentals of Integrity Monitoring
Authors
Letizia Lo Presti
Giulio Franzese
Copyright Year
2018
Book
GNSS for Rail Transportation

Print ISBN: 978-3-319-79083-1

Electronic ISBN: 978-3-319-79084-8

Copyright Year: 2018

DOI
https://doi.org/10.1007/978-3-319-79084-8_3