G. V. Kinal

Peer Reviewed

Abstract: The visibility of geostationary augmentation and GPS satellites from typical aircraft engaged in banked turning maneuvers is considered. First, the optical visibility from the GPS antenna location to the geostationary orbital arc is analyzed. It is shown that if two geostationary satellites at substantially different azimuths are available, they are blocked at different times during the aircraft turn, so that at no time during the maneuver is the aircraft without at least one geostationary’s signal. Test flight data provided by Boeing for GPS satellites are then used to indicate that actual signal reception often continues well below the pessimistic optical mask. These considerations, as well as the operational fact that large banking angles do not occur in the final approach phase where integrity and continuity are most important, suggest that geostationary augmentation will remain effective at much higher latitudes than has been indicated in previous references.
Published in: NAVIGATION: Journal of the Institute of Navigation, Volume 42, Number 4
Pages: 595 - 604
Cite this article: Kinal, G. V., "CONSIDERATION OF PRACTICAL VISIBILITY OF GEOSTATIONARY AUGMENTATION SATELLITES FROM AIRCRAFT", NAVIGATION: Journal of The Institute of Navigation, Vol. 42, No. 4, Winter 1995-1996, pp. 595-604.
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