DME Navigation System

Role
1. Airborne DME
  1. Interrogator
2. DME Ground Station
  1. Transponder
Unit of Measurement
1. Slant Range
  1. in nautical miles
2. Time to Station
  1. in hour minute second
3. Ground Speed
  1. in nautical miles per hour
Airborne DME
1. Control Panel
2. Transceiver
3. Antenna
4. Display
Channels
1. X Channel
  1. 12us pulse pair spacing
  2. Ground signal is 63 MHz higher than Air signal
2. Y Channel
  1. 36us pulse pair spacing
  2. Ground signal is 63 MHz lower than Air signal
Radio Frequencies
1. 960 MHz and 1215 MHz
2. DME frequency is paired with VOR frequency
Slant Range Error
1. Minimal
  1. Fly Far
  2. Fly Low
2. Significant
  1. Fly Close
  2. Fly High
Computation
1. (120µs - 50µs) / 12.35µs nm
Ground Station
1. Civilian
  1. VOR/DME
    1. Slant Range
    2. Bearing
  2. ILS/DME
    1. DME replaces Marker Beacons
2. Military
  1. TACAN
    1. Slant Range
      1. Share with Civilian
    2. Bearing

Resource summary

	Created by KIM SENG TANG over 8 years ago