THE SCATTERING FUNCTION OF A SHALLOW-WATER MULTIMODE WAVE-GUIDE

On the basis of simple qualitative considerations an approximate expre ssion was derived for the scattering function of a hydroacoustical cha nnel in a shallow sea, which depends only on determinate characteristi cs of the channel. Conditions at which the effect of sound scattering, a at random inhomogeneities may be ignored in the estimation of signal spreading in a hydroacoustical waveguide were revised. A comparison o f this function with measurements in a shallow region confirmed its us efulness for signal spread estimation in the sea.