A BiDirectional Antenna for Providing a Back Course Using the Contemporary ILS Localizer

Richard McFarland

Abstract:	This paper describes the development of an antenna which can be used to provide both tiont and back courses with the contemporary Instrument Landing System (ILS) localizer. It is a derivative of the contemporary Wilcox FA-9759 antenna which is in common use at airports today. Modification of the FA-9759 antenna can be accomplished in l/2 day with a team of several workers. It is a cost-effective antenna because with this antenna in use and given a satisfactory multipath environment, electronic guidance to the opposite-direction runway can be provided the user at essentially no additional cost over the original array.
Published in:	Proceedings of the 1995 National Technical Meeting of The Institute of Navigation January 18 - 20, 1995 Disneyland Hotel Anaheim, CA
Pages:	445 - 451
Cite this article:	McFarland, Richard, "A BiDirectional Antenna for Providing a Back Course Using the Contemporary ILS Localizer," Proceedings of the 1995 National Technical Meeting of The Institute of Navigation, Anaheim, CA, January 1995, pp. 445-451.
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