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The Possibility of an Altitude-Azimuth Almanac for Air Navigation

Published online by Cambridge University Press:  18 January 2010

D. H. Sadler
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Extract

It is generally agreed that the increasing speed of modern aircraft, together with the availability of short-range radio and radar aids, necessitates a fresh approach to astronomical methods; less accuracy can be tolerated in the calculations but greater speed is essential. There are three stages after observation : the derivation of the position of the heavenly body observed, usually from the Air Almanac; the solution of the astronomical spherical triangle, usually by means of reduction tables ; and the resulting plotting of the position lines and fix.

Type
Astronomical Navigation in the Air. A Discussion on Methods to Produce Speed and Accuracy
Information
The Journal of Navigation , Volume 2 , Issue 4 , October 1949 , pp. 285 - 289
Copyright
Copyright © The Royal Institute of Navigation 1949

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References

REFERENCES

1Journal of the Institute of Navigation, Vol. I, p. 185, 1948.Google Scholar
2Anuário published by die Observatório Nacional of Rio de Janeiro. 1947 Edition, p. 150et seq.Google Scholar
3Táhuas Nauticas e Aéronauticas by Radler de Aquino, Rio de Janeiro, 1943.Google Scholar