United States Department of Transportation
i
Panama Canal Fog Navigation Study : System Requirements Statement
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1984-03-01
[PDF-1.65 MB]
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Abstract:Efforts to minimize the adverse impact of fog on Panama Canal operations have focused in the past on obtaining methods of predicting fog, of dispersing fog and of providing navigation during fog. This report describes the result of the most recent fog navigation system requirements study. The study is based on information gathered by an on-site visit, a review of past studies conducted by the Panama Canal Commission (PCC), and interviews with the Pilot force, engineering staff, and management personnel.
The canal's fog navigation problme areas are defined. The performance requirements of a fog navigation system for use by Pilots in the Gaillard Cut are given. Broad system requirements are crosstrack accuracy of 16 to 20 feet (2 standard deviations, 95 percent), along-track accuracy of 32 to 40 feet (2 standard deviations 95 percent), display reslution of 512 pixels and an update rate of one per second. All requirements can be met with state-of-the-art navigation equipment and display systems.
Technical details on all assumption and the impact of these assumptions on the navigations system design are given.
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