Chapter
15
Distance Measuring Equipment (DME)
Introduction |
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Frequencies . . . . . . . . . . . . . . . . . . . . |
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Uses of DME |
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Principle of Operation . . . . . . . . . . . . . . . . |
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Twin Pulses . . . . . . . . . . . . . . . . . . . . |
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Range Search . . . . . . . . . . . . . . . . . . . |
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Beacon Saturation . . . . . . . . . . . . . . . . . |
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Station Identification . . . . . . . . . . . . . . . . |
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VOR/DME Frequency Pairing |
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DME Range Measurement for ILS . . . . . . . . . . . . |
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Range and Coverage . . . . . . . . . . . . . . . . |
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Accuracy |
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DME Summary . . . . . . . . . . . . . . . . . . |
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Questions . . . . . . . . . . . . . . . . . . . . |
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Answers . . . . . . . . . . . . . . . . . . . . . |
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15 Distance Measuring Equipment (DME)
(DME) Equipment Measuring Distance 15
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Distance Measuring Equipment (DME) 15
Introduction
Distance Measuring Equipment (DME) is a secondary radar system that enables an aircraft to establish its range from a ground station. A pilot obtains accurate magnetic bearings from a VHF Omni-range (VOR) beacon and accurate slant ranges from a DME. The two facilities are normally co-sited to form the standard ICAO approved RHO-THETA short range, “Line of Sight” navigation aid. (Rho = range; Theta = bearing)
Figure 15.1 Distance Measuring Equipment
Figure 15.2 Combined Doppler VOR/DME
Distance Measuring Equipment (DME) 15
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15 Distance Measuring Equipment (DME)
(DME) Equipment Measuring Distance 15
Figure 15.3 A Conventional VOR Installation Surmounted by a DME Antenna
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Distance Measuring Equipment (DME) 15
Figure 15.4 DME, VOR and Tacan Presentation - Topographical Chart
Distance Measuring Equipment (DME) 15
Figure 15.5 DME & VOR presentation - AERAD airways high level chart
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