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Difference between revisions of "Distance Measuring Equipment (DME)"

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Revision as of 12:33, 16 June 2008

Article Information
Category: Flight Technical Flight Technical
Content source: Skybrary skybrary
Content control: Eurocontrol Eurocontrol


Distance Measuring Equipment (DME)

Definitions

Distance Measuring Equipment (DME) is

  1. [a navigation beacon] usually coupled with a VHF Omnidirectional Radio Range (VOR) beacon to enable aircraft to measure their position relative to that beacon. Aircraft send out a signal which is sent back after a fixed delay by the DME ground equipment. An aircraft can compute its distance to the beacon from the delay of the signal perceived by the aircraft's DME equipment using the speed of light.
  2. a combination of ground and airborne equipment which gives a continuous slant range distance-from-station readout by measuring time-lapse of a signal transmitted by the aircraft to the station and responded back. DMEs can also provide groundspeed and time-to-station readouts by differentiation.

(EUROCONTROL EATM Glossary of Terms)

Related Articles

Non-Directional Beacon; Automatic Direction Finding; VHF Omnidirectional Radio Range (VOR); Instrument Landing System (ILS); Global Positioning System (GPS).