it is a technique that ensures the integrity of the provided data by redundant measurements.
it is a technique whereby the receivers of the world-wide distributed monitor stations – ground segment – automatically determine the integrity of the navigation message.
it is a method whereby a receiver ensures the integrity of the Pseudo Random Noise -PRN- code transmitted by the satellites.
it is the ability of the GPS satellites to check the integrity of the data transmitted by the monitoring stations of the ground segment.
062.06.01.02.21 LOs: Define ‘receiver autonomous integrity monitoring (RAIM)’ as a technique that ensures the integrity of the provided data by redundant measurements.
Receiver Autonomous Integrity Monitoring (RAIM) is a technology developed to assess the integrity of Global Positioning System (GPS) signals in a GPS receiver system. RAIM is a technique by which a receiver checks the reliability of the signals it is receiving and can detect if one of the signals is incorrect. It monitors more than 4 satellites in view and excludes the one providing an inaccurate signal when necessary. With this technique, RAIM can maintain an accurate 3D fix by monitoring 5 satellites even if satellite signals become temporarily erroneous. It improves redundancy based on multiple satellite signals and no external systems – the benefit is that a faulty satellite may be excluded and the RAIM function can still be further maintained.
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