What is the purpose of fault exclusion in RAIM?

The purpose of fault exclusion in RAIM (Receiver Autonomous Integrity Monitoring) is to identify and eliminate a corrupt satellite from the system. RAIM is used in navigation systems to ensure the integrity and reliability of satellite data. By monitoring the performance of satellites, RAIM can detect anomalies or faults in the signals received.

When a satellite signal is determined to be unreliable or incorrect, it can be excluded from the calculations that determine the user's position. This process is crucial because using corrupted data can lead to significant navigation errors. By removing the faulty satellite, the integrity of the navigation solution is preserved, ensuring that the user receives accurate positional information.

The other options, while related to navigation or performance aspects, do not directly align with the primary function of fault exclusion in RAIM. The focus is specifically on recognizing and disregarding inaccurate signals to maintain system integrity.