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Position Finding Without an Horizon

Nature volume 81, pages 111113 (22 July 1909) | Download Citation

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Abstract

WHEN about three years ago the first Gordon-Bennett, balloon race was held, and several of the aëronauts descended precipitately on the north coast of France, believing they were approaching the Bay of Biscay, it seemed to me worth while to consider the possibility of designing an instrument by the aid of which observations could be taken so as to obtain even a rough idea of position. For this purpose the observation of the altitude and azimuth at any moment of a single star or of the sun. will be sufficient to establish the locality, or the altitudes of two stars not in the same vertical plane with the observer will do as well.

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https://doi.org/10.1038/081111b0

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