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Position Fixing in a Fast Moving Ship by Culmination of a Celestial Body

Published online by Cambridge University Press:  21 October 2009

Matti A. Ranta
Matti A. Ranta
Affiliation:
(Helsinki University of Technology, Finland)
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Extract

A well-known navigational method is to determine position through observation of the highest altitude of the Sun at noon. This procedure is based tacitly on the assumption that the observed altitude is a symmetrical function of time about the highest point which appears thus in the meridian. In order to examine the accuracy of this approximation for a fast moving ship, let us consider the situation in more detail. The equations will be formulated using the standard functions in a modern pocket calculator and its application modules.

Keywords

1. Astro2. Marine navigation
Type
Research Article
Information
The Journal of Navigation , Volume 43 , Issue 2 , May 1990 , pp. 276 - 286
Copyright
Copyright © The Royal Institute of Navigation 1990

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References

REFERENCES

1Bowditch, N. (1977). American Practical Navigator, Vol. 1. Defense Mapping Agency, Hydrographic Center.Google Scholar
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3Yallop, B. D. and Hohenkerk, C. Y. (1984). Compact Data for Navigation and Astronomy for the years 1986–1990. HM Nautical Almanac Office. Her Majesty's Stationery Office, London.Google Scholar