What does RAIM stand for?

What does RAIM stand for?

• A. Receiver Autonomous Integrity Monitoring
• B. Remote Autonomous Integrity Monitoring
• C. Receiver Automatic Integrity Monitoring
• D. Receiver Aerial Integrity Monitoring

Answer: (A)

RAIM is the capability of a GNSS receiver to assess the integrity of its own navigation solution using only satellite signals. It stands for Receiver Autonomous Integrity Monitoring. Here’s why that fits: the receiver is the unit performing the checks (Receiver); it does so without relying on external monitors (Autonomous); it focuses on the trustworthiness of the position/velocity/time data (Integrity); and the evaluation happens continually as new satellite data comes in (Monitoring). This combination means the receiver can detect and warn about faults in the satellites, signals, or navigation message that could affect accuracy. The other phrases don’t describe who performs the check or how, which is why they aren’t correct.

RAIM is the capability of a GNSS receiver to assess the integrity of its own navigation solution using only satellite signals. It stands for Receiver Autonomous Integrity Monitoring. Here’s why that fits: the receiver is the unit performing the checks (Receiver); it does so without relying on external monitors (Autonomous); it focuses on the trustworthiness of the position/velocity/time data (Integrity); and the evaluation happens continually as new satellite data comes in (Monitoring). This combination means the receiver can detect and warn about faults in the satellites, signals, or navigation message that could affect accuracy. The other phrases don’t describe who performs the check or how, which is why they aren’t correct.