MAXIMUM LIKELIHOOD ESTIMATION APPLIED TO A FOUR FREQUENCY OMEGA EXPERIMENT

C. J. Waylan and J. E. OhIson,

Peer Reviewed

Abstract:	The Omega Navigation System will provide world-wide position location information. As a result, Omega is being investigated as the information source for position location for several search and rescue (SAR) systems. One of these is the Global Rescue Alarm Net (GRAN). In order for Omega to fulfill the requirements of GRAN, the inherent lane ambiguity problem must be resolved. Presently anticipated ambiguity resolution techniques are not capable of resolving the nominally 72 nmi unambiguous lanes which result from the currently planned three Omega frequencies. In order for ambiguity resolution to be achieved, the addition of at least one frequency to the Omega format is being considered. This gives rise to the question of whether sufficient accuracy of position within an unambiguous lane can be obtained. This paper presents the results of the processing of experimental four frequency Omega data using the maximum likelihood estimator.
Published in:	NAVIGATION: Journal of the Institute of Navigation, Volume 22, Number 3
Pages:	235 - 243
Cite this article:	Waylan, C. J., OhIson, J. E., "MAXIMUM LIKELIHOOD ESTIMATION APPLIED TO A FOUR FREQUENCY OMEGA EXPERIMENT", NAVIGATION: Journal of The Institute of Navigation, Vol. 22, No. 3, Fall 1975, pp. 235-243.
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