MANIFESTLY RECIPROCAL SCATTERING-AMPLITUDES FOR ROUGH INTERFACE SCATTERING

A new exact expression for scattering amplitudes for rough interface scattering is presented. This expression is shown to hold for a variety of boundary conditions: Dirichlet, Neumann, impedance, fluid-fluid, and fluid-solid. The expression is shown to be a convenient starting point for deriving approximations that also respect reciprocity. Examples include a small-slope approximation, a reciprocal phase-perturbation approximation, and a reciprocal smoothing approximation. © 1990, Acoustical Society of America. All rights reserved.