Practice question

For GNSS-based navigation, how many satellites must be in view for the onboard receiver to perform Receiver Autonomous Integrity Monitoring (RAIM) to detect a faulty satellite?

  1. A minimum of 5 satellites (or 4 satellites with baro-aiding).
  2. A minimum of 4 satellites.
  3. A minimum of 6 satellites.
  4. A minimum of 3 satellites.

Answer: A — A minimum of 5 satellites (or 4 satellites with baro-aiding).

The correct answer is shown above. Try the full quiz for additional practice.

Practice more: KCAA ATC Practice Questions - KCAA Air Traffic Controller Theoretical Knowledge Examination (Kenya) Exam →