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- W2022803869 abstract "This paper presents a new method for computing the field produced when a wave is incident upon a plane screen. The field is given approximately by an integral over the screen, and our results are obtained by evaluating the integral asymptotically by means of stationary phase. This method is shown to be closely related to the geometrical theory of diffraction and results obtained here agree with the results of the geometrical theory in their common region of validity. Furthermore, by applying some recent results in the theory of uniform asymptotic expansions of integrals, the field can be computed at caustics, shadow boundaries and edges where the geometrical theory fails. Again results here agree with results obtained by other methods. Finally this work demonstrates that the results of geometrical diffraction theory actually represent an asymptotic approximation to an actual solution of the wave equation, although it has not been shown that this solution satisfies the boundary condition." @default.
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- W2022803869 date "1967-11-01" @default.
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- W2022803869 title "A New Approach to Edge Diffraction" @default.
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- W2022803869 doi "https://doi.org/10.1137/0115126" @default.
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