The Application of Differential GPS to the Conduct of Helicopter Off-Shore Approaches in the North Sea

Rolf Johannessen and David Howe

Abstract:	The North Sea is an area with considerable helicopter trafiic which relies extensively on terrestrial hyperbolic systems for en-route navigation. Approaches to the off- shore platforms are performed using the aircraft’s weather radar. As hyperbolic navigation systems are likely to have a limited future, and the replacement of weather radsr- based approaches is considered desirable, the possibility of using GPS is being explored both for en-route and approach guidance. As there is an outstanding need for generic airworthiness requirements for the conduct of off- shore approaches, and as the approach phase is the more demanding, a research programme has been launched which concentrates on the use of DGPS for helicopter off- shore approaches. The multipath environment is expected to be particularly harsh in the vicinity of the off-shore platforms, This will be investigated along with the flyability of a system which utilises GPS to generate approach guidance.
Published in:	Proceedings of the 51st Annual Meeting of The Institute of Navigation (1995) June 5 - 7, 1995 Antlers Doubletree Hotel Colorado Springs, CO
Pages:	475 - 480
Cite this article:	Johannessen, Rolf, Howe, David, "The Application of Differential GPS to the Conduct of Helicopter Off-Shore Approaches in the North Sea," Proceedings of the 51st Annual Meeting of The Institute of Navigation (1995), Colorado Springs, CO, June 1995, pp. 475-480.
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