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Eigenray tracing in an ocean using Fermat’s principle

✍ Scribed by N.S. Shashidhar; G.V. Anand

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
447 KB
Volume
186
Category
Article
ISSN
0022-460X

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✦ Synopsis

A novel numerical approach is presented for solving the problem of three-dimensional eigenray tracing in an ocean channel. A variational method is developed based on Fermat's principle which yields eigenrays directly without having to search for a ray which reaches the receiver. The algorithm yields ''true'' Fermat rays: i.e., eigenrays for which the travel-time is stationary rather than minimal. The numerical results included in this paper show the algorithm to be more accurate and faster than a method based on Snell's law.

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