Distance measuring equipment
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In aviation, distance measuring equipment is a radio navigation technology that measures the slant range between an aircraft and a ground station by timing the propagation delay of radio signals in th
D-VOR/DME ground station
DME antenna beside the DME transponder shelter
A tactical air navigation system, commonly referred to by the acronym TACAN, is a navigation system initially designed for naval aircraft to acquire moving landing platforms and later expanded for use
Distance measuring equipment
…determine its azimuth angle and distance from the station, a rough 2D locationing capability. DME is compatible with the distance measuring component of TACAN, the military equivalent of VOR/DME with more accurate rangefinding. A VORTAC (VOR with TACAN) installation allows both military and civil aircraft…
A DVORTAC installation in Germany; the TACAN antenna is elevated above the center DVOR-antenna on the counterpoise.
A shipboard TACAN antenna on USS Raleigh (LPD-1) with a lightning rod extending above it