F. G. Karkalik

Peer Reviewed

Abstract: With the increase in the number of users and potential users of the Omega navigation system, caused in part by the scheduled shutdown of the U.S.-operated Loran/A chains, there is a need to assess the performance of the Omega system. This is particularly true for those areas where little or no measurement data from the current permanent stations exists. This paper presents the highlights of the results of a validation of the Omega system over the Western Pacific area. Hourly averages of LOP phase measurement data taken over several months at seven fixed monitor sites located within the Western Pacific area were reviewed. These data were supplemented with data taken over the area by a dedicated flight test conducted by the U.S. Navy. In addition, several hundred operational Omega navigation observations provided by ship and aircraft crews were evaluated. Statistical analyses were performed on the data, the results of which were compared to predictions wherever possible. Summaries of the analysis results were reviewed, interpreted and structured in the form of tables and charts in order to present Omega performance guidelines with a reasonable degree of traceability to the basic measured data. Recommended sets of LOPS for regions within the Western Pacific area are presented along with alternate LOPS. Regions with marginal redundant coverage are identified. In addition, Omega coverage over those regions previously serviced by Loran-A was examined for adequacy.
Published in: NAVIGATION: Journal of the Institute of Navigation, Volume 25, Number 4
Pages: 395 - 404
Cite this article: Karkalik, F. G., "OMEGA VALIDATION OVER THE WESTERN PACIFIC AREA", NAVIGATION: Journal of The Institute of Navigation, Vol. 25, No. 4, Winter 1978-1979, pp. 395-404.
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