Description: The Receiver Autonomous Integrity Monitoring
(RAIM) is used to improve positioning system safety. This paper
proposes a new RAIM approach to detect and exclude multifaults of GNSS measurements before position estimation. The
new approach uses the information filter for position estimation
and information test to faults diagnosis. This test is based on
exponential convergence of the information filter measured using
the mutual information. Results with real data of GNSS
measurements (C/A code and L1 phase) show the benefits of the
proposed approach in improving the GNSS receiver integrity
positioning.
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