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The Possibility of an Altitude-Azimuth Almanac for Air Navigation
Published online by Cambridge University Press: 18 January 2010
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
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- Copyright
- Copyright © The Royal Institute of Navigation 1949