Abstract: Starting with Picht's solution of the wave equation in the form of an integral of plane waves over a caustic, we derive expressions for the solution which depend entirely on the geometry of the problem. An asymptotic evaluation of Picht's integral for high frequencies gives the desired result which can have a number of different forms, depending on the precise region where the field is being observed. In particular, a change in the asymptotic field occurs in going from the regular ray field to the caustic or from a regular part of the caustic to a cusp.
Publication Year: 1959
Publication Date: 1959-12-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 3
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