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http://dx.doi.org/10.12673/jant.2011.15.6.994

Improvement of ADU(Antenna Distribution Unit) for RF signal Stability of Glide Path  

Lee, Chang-Woo (한국공항공사)
Lee, Seung-Tae (한국공항공사)
Publication Information
Journal of Advanced Navigation Technology / v.15, no.6, 2011 , pp. 994-999 More about this Journal
Abstract
This paper explains how existing electrical ADU(Antenna Distribution Unit) has been improved into a mechanical ADU. Generally the mechanical ADU has stabilized Glide Path which provides a RF signal to the aircraft for safe landing and it has solved the issue of phase shift and power distribution ratio change which can be occurred during long-term use. Besides it has been certified by Flight check and operating several airports in oversea as well as in korea.
Keywords
Antenna Distribution Unit; Glide Path; Instrument Lading System;
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  • Reference
1 ICAO Annex 10 ; Aeronautical Telecommunications Vol 1, (Radio Navigation Aids) 6th, pp. ATT C21-C26, July 2006.
2 ICAO Doc 8071 ; Manual on Testing of Radio Navigation Aids, pp. 4-18, 31/10/2002
3 FAA Order 8200.1C ; United States Standard Flight Inspection Manual, pp. 15-51-15-52, 02/01/2007
4 FAA Order 6750.49a ; Maintenance of Instrument Landing System(ILS) Facilities, ch2, pp. 40-44, 10/17/2005.
5 FAA TI 8200.52 ; Flight Inspection Handbook, pp. 15-82-15-83, 09/14/2009
6 FAA 6750.16D ; Siting Criteria for Instrument Landing Systems, pp. 3-13-3-23, 02/14/2005