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The Precision of the Air Almanac and the Sight Reduction Tables, A.P. 3270

Published online by Cambridge University Press:  18 January 2010

D. H. Sadler
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Extract

Ever since the introduction of the Air Almanac and the Astronomical Navigation Tables, requests have been received for information as to the errors that can arise in their use. Estimates of error, for particular combinations, were made on several occasions and, in 1947, the calculation was systematized; but the methods and results were not published. It is now probable that the Sight Reduction Tables for Air Navigation, A.P. 3270 (H.O. 249 in U.S.A.), and possibly the Air Almanac, will increasingly be used for surface navigation and it therefore seems desirable to put on record a precise statement of the errors that can arise through their use. The earlier work has accordingly been modified for the changes in the publications.

Type
Research Article
Information
The Journal of Navigation , Volume 7 , Issue 1 , January 1954 , pp. 49 - 58
Copyright
Copyright © The Royal Institute of Navigation 1954

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References

REFERENCES

1Schlesinger, F. (1917). On the errors in the sum of a number of tabular quantities. Astronomical Journal, 30, 183.CrossRefGoogle Scholar
2Smiley, C. H. (1951). The accuracy of observations made with marine sextants. Navigation, Los Angeles, 2, 342.Google Scholar
3Weems, P. V. H. (1951). Accuracy of marine navigation. Navigation, Los Angeles, 2, 354.Google Scholar