DME is an integral component of the TACAN System. Which navigation system does it complement?

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Prepare for the VT-IV Navigation Familiarization Exam II. Master navigation techniques with flashcards and multiple choice questions, with each answer fully explained. Boost your confidence and ace your exam!

Multiple Choice

DME is an integral component of the TACAN System. Which navigation system does it complement?

Explanation:
DME provides distance information to a ground station, and it is designed to work alongside TACAN, which supplies the bearing (azimuth). Together, they give a complete 2D fix: azimuth from the TACAN portion and distance from DME. That integrated pairing is the essence of the TACAN system, with civilian use seen in VORTAC (VOR with TACAN). The other options don’t pair with DME in this system structure—ILS and GPS are different types of guidance, and VOR alone provides bearing without the distance component. So, DME complements the TACAN system.

DME provides distance information to a ground station, and it is designed to work alongside TACAN, which supplies the bearing (azimuth). Together, they give a complete 2D fix: azimuth from the TACAN portion and distance from DME. That integrated pairing is the essence of the TACAN system, with civilian use seen in VORTAC (VOR with TACAN). The other options don’t pair with DME in this system structure—ILS and GPS are different types of guidance, and VOR alone provides bearing without the distance component. So, DME complements the TACAN system.

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