This chapter will be long and perhaps overburdened with technical detail. Possibly as a result of this, it should provide a reasonably thorough introduction to the theory of EM scattering in the LGA regime that is particularly pertinent to the discussion of sea clutter. The reader who wishes to carry out controlled calculations of this kind, and to interpret their output sensibly, has no alternative but to study their theoretical background in some depth. Much of the relevant material is spread throughout the physics and engineering literature and is expressed in a variety of notations. It is hoped that, by focussing our attention on the less general scalar formulation of the problem, we will be able to lead the reader through the finer points of the theory and its implementation, and elucidate details too often omitted in articles in the literature, without incurring an unacceptable overhead of formulaic obfuscation. The authors sincerely hope that they can succeed in achieving this aim, as they remember only too well the difficulties they experienced when encountering this material for the first time.
Scattering from a corrugated surface, Page 1 of 2
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