Practice question

In the context of surveillance equipment, what does the term 'Dependent' signify in Automatic Dependent Surveillance-Broadcast (ADS-B)?

  1. The system depends on the aircraft having a functioning satellite navigation source (like GNSS) to determine and transmit its position.
  2. The system depends on ground-based radar interrogation to trigger its transmission.
  3. The system depends on the controller manually selecting the aircraft target on the display.
  4. The system depends on two-way VHF voice confirmation to validate target coordinates.

Answer: A — The system depends on the aircraft having a functioning satellite navigation source (like GNSS) to determine and transmit its position.

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