Calculation of the Phase Quadrature Components of the Scattered Field 5. Modification for Surfaces Generated by a Narrow-band Process

The report Investigates scattering from a rough surface when transmitter and receiver are at a finite distance from each other, so that the sphericity of the incident and scattered waves has to be taken into account. The calculation is complicated by the fact that, unlike the case of plane waves, the equlprobabillty planes of the surface do not coincide with the equlphase surfaces, and therefore a number of simplifying assumptions are made, in particular, geometric optics are used. The phase distribution of the scattered field by approximate integrations. From this, the other quantities of Interest can be found. Ihe results are compared with the measurements performed by Beard using microwaves and a random water surface with known statistical properties.