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Automatic Plotting of Airborne Geophysical Survey Data

Published online by Cambridge University Press:  18 January 2010

B. M. Ewen Smith
B. M. Ewen Smith
Affiliation:
(Scott Polar Research Institute)
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Extract

When geophysical measurements are made from the air, it is important to know the position of the aircraft. The position at any time is usually known from a combination of position-fixing and dead-reckoning systems. In-flight optimization of this combination is a well-studied subject. When post-flight track plotting is required for geophysical survey, use can be made of both the initial and terminal position fixes to correct the dead-reckoning track and hence improve on the in-flight version. This technique is applied to compute the track of aircraft conducting ice thickness measurements in the Antarctic, and the effect of certain errors is evaluated. The algebraic results are equally applicable in parts of the world where better navigational aids are available. A relation is derived between the track plotting errors and die errors in the geophysical measurement such that the precision of one is not degraded by errors in the other.

Type
Research Article
Information
The Journal of Navigation , Volume 25 , Issue 2 , April 1972 , pp. 162 - 175
Copyright
Copyright © The Royal Institute of Navigation 1972

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References

REFERENCES

1Evans, S. and Smith, B. M. E. (1969). A radio echo equipment for depth sounding in polar ice sheets, J. Scient. Iustrum. (Series 2), 2, 131.Google Scholar
2Evans, S., Gudmandsen, P., Swithinbank, C., Hattersley-Smith, G., and Robin, G. de Q. (1969). Glacier sounding in the polar regions: a symposium, Geog. Journ., 135, 547Google Scholar
3Evans, S. and Smith, B. M. E. (1970). Radio echo exploration of the Antarctic ice sheet, 1969–70, Polar Rec., 15, 336.CrossRefGoogle Scholar
4Kayton, M. and Freid, W. R. (Eds.). (1969). Avionics Navigation Systems, Wiley, New York.Google Scholar
5Ramsayer, K. (1969). Integrated navigation by least squares adjustment. This Journal, 23, 174.Google Scholar
6Beckmann, P. and Spizzichino, A. (1963). The Scattering of Electromagnetic Waves from Rough Surfaces, Pergamon Press, London.Google Scholar
7Moody, A. B. (1970). Satellite systems for geophysical exploration at sea. This Journal, 23, 458.Google Scholar