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Blinking Detection Methods for Loran-C

Published online by Cambridge University Press:  21 October 2009

André Nieuwland
André Nieuwland
Affiliation:
(Delft University of Technology)
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Abstract

To ensure integrity of the Loran-C radionavigation system during non-precision approaches, an automatic blinking system notifies the user when the system is not functioning within specifications. To be certain that timely detection of this blinking can be guaranteed, one of the requirements imposed on an airborne Loran-C receiver is that it should flag an alert when the signal to noise ratio drops below –6 . This paper addresses some blinking detection methods, that will ensure safe operation beyond this –6 dB limit. A preliminary version of this article was presented at the Wild Goose Conference in Birmingham, August 1992.

Keywords

Hyperbolic systems.Integrity.
Type
Research Article
Information
The Journal of Navigation , Volume 47 , Issue 1 , January 1994 , pp. 46 - 53
Copyright
Copyright © The Royal Institute of Navigation 1994

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References

REFERENCES

1 Minimum operational performance standards for airborne area navigation equipment using Loran-C inputs (1986). RTCA/DO-194, tech. rep., Radio Technical Commission for Aeronautics, Washington, Nov.Google Scholar
2 Specification of the transmitted Loran-C signal (1981). Tech. rep., U.S. Coast Guard, Washington, July.Google Scholar
3 Minimum performance standards for airborne Loran-A and Loran-C receiving equipment. (1975) RTCA/DO-159, tech. rep., Radio Technical Commission for Aeronautics, Washington, Oct.Google Scholar
4TSO-C6ob: Airborne area navigation equipment using Loran-C inputs. (1988). Tech. rep., Federal Aviation Administration, Sept.Google Scholar
5Carroll, J. V. (1991). Notes on the computation and use of atmospheric signal-to-noise ratio in Loran receivers. In Proceedings of the Twentieth Annual Technical Symposium, pp. 132–139, The Wild Goose Association, Oct.Google Scholar
6 Technical Committee No. 80 (1989). Draft standard: Loran-C receivers for ships. Tech. rep., International Electrotechnical Commission, July.Google Scholar
7Last, D., Farnworth, R. and Searle, M. (1991). Ionospheric propagation and Loran-C range – the sky's the limit. In Proceedings of the Twentieth Annual Technical Symposium, pp. 166–176, The Wild Goose Association, Oct.Google Scholar
8Valley, G. E. Jr. and Wallman, H. (1965). Vacuum Tube Amplifiers, ch. 2. Dover Publications Inc., New York.Google Scholar