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Refined Collision Risk Model for Oceanic Flight Under Longitudinal Distance-Based Separation in ADS-C Environment

Published online by Cambridge University Press:  26 March 2014

Ryota Mori
Ryota Mori*
Affiliation:
(Electronic Navigation Research Institute, Tokyo, Japan)
*
(E-mail: r-mori@enri.go.jp)
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Abstract

Currently, the 30 nautical mile (nm) minimum longitudinal separation standard is applied on oceanic routes under the Automatic Dependent Surveillance-Contract (ADS-C) environment. However, the periodic position report should be provided at least every ten minutes in Japanese airspace based on previous safety analysis. The position report is usually sent via satellite connection, so less frequent position reports would reduce connection costs by airlines. Since the previous safety analysis estimates the risk of collision conservatively, this paper proposes a refinement of the collision risk model by considering the dependency between two closely separated aircraft. The result shows that the periodic position report interval can be extended without infringing safety.

Keywords

Safety analysisOceanic flightLongitudinal separationStatistics
Type
Research Article
Information
The Journal of Navigation , Volume 67 , Issue 5 , September 2014 , pp. 845 - 868
Copyright
Copyright © The Royal Institute of Navigation 2014 

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