オメガシステムによる測得位置について

概要

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Ships equipped with the OMEGA navigation system, have been increasing these recent years. However, the evaluation of a given position in this system, is still not fixed. The authors measured OMEGA signals of C-H, D-H and E-H pairs on the going and returning voyages between Japan and Australia from the 15th of January till the 10th of March, 1978. The results were as follows ; (1) On the received condition of OMEGA signals, the E-H pair was fine during all coverage, but the C-H and D-H pairs were worse while going southward, especially, the C-H pair was the worst at nighttime in the South Pacific Ocean. (2) The fixed position by C-H and E-H pairs have comparative stability and confidence in daytime, but they have no stability and confidence at nighttime and an hour around sunrise and sunset. (3) A user must be careful about the included angle based on the direction from OMEGA stations, because fixed positions have large errors in the area of a small included angle, even if the OMEGA signal can be received in fine condition.
社団法人日本航海学会の論文
1979-02-20