What does Omega and Decca have in common?

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Avionics Practice Test: Terrestrial Radio Navigation System — practice the complete quiz, review flashcards, or try a random question.

Terrestrial Radio Navigation System topics include: Radio propagation, noise characteristics, point source and hyperbolic radio systems. Terrestrial radio navigation systems (TRNS) are networks of synchronized transmitters that broadcast signals that can reach the interior of buildings. TRNS are similar to GNSS satellites and can provide navigation services for indoor or urban users.  TRNS work by using a signal sent by a mobile transmitter-receiver-indicator unit, which is then returned to the unit by a fixed transponder. The round trip time is then converted into distances.  Some... Show more

What does Omega and Decca have in common?