New PDF release: An Introduction to Electromagnetic Inverse Scattering

By K.I. Hopcraft, P.R. Smith

ISBN-10: 9048140706

ISBN-13: 9789048140701

ISBN-10: 9401580146

ISBN-13: 9789401580144

With the appearance of the relatively new disciplines of distant sensing and non-destructive assessment of fabrics, the subject of inverse scattering has broadened from its origins in straight forward particle physics to surround a variety of functions. One such region that's of accelerating value in inverse scattering in the context of electromagnetism and this article goals to function an creation to that specific speciality. The subject's improvement has advanced by the hands of engineers, mathematicians and physicists alike, with an inevitable disparity of emphasis and notation. one of many major ambitions of this article is to distill the essence of the topic and to offer it within the kind of a graduated and coherent improvement of rules and strategies. The textual content presents a actual method of inverse scattering suggestions, emphasizing the utilized facets instead of the mathematical rigour. The authors' instructing and study backgrounds in physics, electric engineering and utilized arithmetic let them to discover and tension the go disciplinary nature of the topic.
This remedy might be of use to somebody embarking on a theoretical or functional examine of inverse electromagnetic scattering.

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Extra resources for An Introduction to Electromagnetic Inverse Scattering

Example text

The problem therefore consists of having to solve the wave equation in three separate regions and matching the solutions using the boundary conditions for the electromagnetic field. 5) as follows: d2i; ~+q12i;=0, Region 1, xa, where q2 = k(£2 - £lsin 2 8)112. 5. JElsin6. In region 1, the solution corresponds to an incident plane wave of amplitude A and a reflected wave of amplitude R(k,8). In region 2, there are waves transmitted and reflected within the slab, which propagate in the forward and backward directions respectively.

1--'l'(x')exp £1 x' Note if we are measuring the scattered field in the region x < x', the the integral above can be written as IIIscat() T X ~£(X')III{-') (. ,) dx ' =iQ1exP(-iQ1X)L --T\-4- exp lQ1x 2 2cos 0 x' £1 which is a wave propagating towards the left (Le. in the negative x-direction) multiplied by a function of the wave-number and weighted average distribution of permittivity throughout the scatterer. 1) gives the reflection coefficient in terms of the free space wave number to be i~El ( ~E(X') R(K'lEI COS9) =2cos9Jx' -E-l-'P(x')exp LI with 'P(x,) ( ..

13 Bibliography Maxwell's theory of the electromagnetic field gestated in a series of papers before receiving a complete treatment in: Treatise on Electricity and Magnetism, Vols. I & II, 3rd Edition, Clarendon Press, Oxford. (Also a paperback edition published in two volumes by Dover). A overview of electromagnetic theory is contained in: JD. ), 2nd Edition, (1975). S. Jones;, 'Methods in Electromagnetic Wave Propagation', Vols 1& II, Clarendon Press (Oxford), (1987). The Fourier transfonn is discussed in R.

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An Introduction to Electromagnetic Inverse Scattering by K.I. Hopcraft, P.R. Smith


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