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Automated Determination of the Position of Ships by Satellites

Published online by Cambridge University Press:  18 January 2010

H. C. Freiesleben
H. C. Freiesleben
Affiliation:
(German Hydrographic Institute)
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Extract

It has recently been suggested that 24-hour satellites might be used as navigational aids. To what category of position determination aids should these be assigned ? Is a satellite of this kind as it were a landmark, because, at least in theory, it remains fixed over the same point on the Earth's surface, in which case it should be classified under land-based navigation aids ? Is it a celestial body, although only one tenth as far from the Earth as the Moon ? If so, it is an astronomical navigation aid. Or is it a radio aid ? After all, its use for position determination depends on radio waves. In this paper I shall favour this last view. For automation is most feasible when an object of observation can be manipulated. This is easiest with radio aids, but it is, of course, impossible with natural stars.

At present artificial satellites have the advantage over all other radio aids of world-wide coverage.

Type
Automation as Applied to the Conduct of Craft by Sea and in the Air
Information
The Journal of Navigation , Volume 20 , Issue 3 , July 1967 , pp. 281 - 285
Copyright
Copyright © The Royal Institute of Navigation 1967

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References

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