THE ZENITH INDICATOR POSITION INSTRUMENT

Lt. J. D. Bottoms

Peer Reviewed

Abstract: The Zenith Indicator Position navigation instrument is a device for instantaneously determining the latitude and longitude of a position on the surface of the earth with respect to the celestial sphere. The instrument operates on the fundamental principle that if the celestial coordinates of a position on the zenith are known, the corresponding terrestrial coordinates can be calculated by:
Published in: NAVIGATION: Journal of the Institute of Navigation, Volume 6, Number 2
Pages: 128 - 129
Cite this article: Bottoms, Lt. J. D., "THE ZENITH INDICATOR POSITION INSTRUMENT", NAVIGATION: Journal of The Institute of Navigation, Vol. 6, No. 2, 1958, pp. 128-129.
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