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Carrier Phase Relative RAIM Algorithms and Protection Level Derivation

Published online by Cambridge University Press:  23 February 2010

Livio Gratton ,
Mathieu Joerger  and
Boris Pervan
Livio Gratton
Affiliation:
(Illinois Institute of Technology)
Mathieu Joerger
Affiliation:
(Illinois Institute of Technology)
Boris Pervan*
Affiliation:
(Illinois Institute of Technology)
*
(Email: [email protected])
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Abstract

The concept of Relative Receiver Autonomous Integrity Monitoring (RRAIM) using time differential carrier phase measurements is investigated in this paper. The precision of carrier phase measurements allows for mitigation of integrity hazards by implementing RRAIM monitors with tight thresholds without significantly affecting continuity. In order to avoid the need for cycle ambiguity resolution, time differences in carrier phase measurements are used as the basis for detection. In this work, we examine RRAIM within the context of the GNSS Evolutionary Architecture Study (GEAS), which explores potential architectures for aircraft navigation utilizing the satellite signals available in the mid-term future with GPS III. The objectives of the GEAS are focused on system implementations providing worldwide coverage to satisfy LPV-200 operations, and potentially beyond. In this work, we study two different GEAS implementations of RRAIM. General formulas are derived for positioning, fault detection, and protection level generation to meet a given set of integrity and continuity requirements.

Keywords

RRAIMGEASGPS III
Type
Research Article
Information
The Journal of Navigation , Volume 63 , Issue 2 , April 2010 , pp. 215 - 231
Copyright
Copyright © The Royal Institute of Navigation 2010

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References

REFERENCES

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