NDLI: Time-domain uniform geometrical theory of diffraction for a curved wedge

Content Provider	IEEE Xplore Digital Library
Author	Rousseau, P.R. Pathak, P.H.
Copyright Year	1963
Abstract	A time-domain version of the uniform geometrical theory of diffraction (TD-UTD) is developed to describe, in closed form, the transient electromagnetic scattering from a perfectly conducting, arbitrarily curved wedge excited by a general time impulsive astigmatic wavefront. This TD-UTD impulse response is obtained by a Fourier inversion of the corresponding frequency domain UTD solution. An analytic signal representation of the transient fields is used because it provides a very simple procedure to avoid the difficulties that result when inverting frequency domain UTD fields associated with rays that traverse line or smooth caustics. The TD-UTD response to a more general transient wave excitation of the wedge may be found via convolution. A very useful representation for modeling a general pulsed astigmatic wave excitation is also developed which, in particular, allows its convolution with the TD-UTD impulse response to be done in closed form. Some numerical examples illustrating the utility of these developments are presented.
Sponsorship	IEEE Antennas and Propagation Society
Starting Page	1375
Ending Page	1382
Page Count	8
File Size	984586
File Format	PDF
ISSN	0018926X
Volume Number	43
Issue Number	12
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-12-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Time domain analysis Physical theory of diffraction Transient analysis Electromagnetic scattering Electromagnetic transients Frequency domain analysis Radar scattering Electromagnetic analysis Transient response EMP radiation effects
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering

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