RAIM stands for which term?

RAIM stands for which term?

• A. Receiver Autonomous Integrity Monitoring
• B. Remote Automatic Integrity Monitoring
• C. Receiver Aided Integrity Monitoring
• D. Radio Assisted Integrity Monitoring

Answer: (A)

RAIM is the receiver’s autonomous integrity monitoring. In GNSS, this means the navigation receiver itself runs checks on the integrity of the satellite measurements using redundancy from multiple satellites, without needing external monitoring. If a satellite signal looks faulty, the receiver can flag it and, with enough satellites, exclude that satellite from the solution to maintain a trustworthy position. The term reflects independence from ground-based or external aids, which is why other phrasings like remote, aided, or radio-assisted monitoring aren’t correct.

RAIM is the receiver’s autonomous integrity monitoring. In GNSS, this means the navigation receiver itself runs checks on the integrity of the satellite measurements using redundancy from multiple satellites, without needing external monitoring. If a satellite signal looks faulty, the receiver can flag it and, with enough satellites, exclude that satellite from the solution to maintain a trustworthy position. The term reflects independence from ground-based or external aids, which is why other phrasings like remote, aided, or radio-assisted monitoring aren’t correct.