Correlation properties of the backscattered field in a nonstationary statistical problem |
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Authors: | O. É. Gulin I. O. Yaroshchuk |
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Affiliation: | (1) Harbin Engineering University, Harbin, 150001, P. R. China;(2) Pacific Institute of Oceanology, Far East Division, Russian Academy of Sciences, Baltiiskaya ul. 43, Vladivostok, 690041, Russia |
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Abstract: | The statistical problem of the scattering of wideband pulses by a random layered medium at normal incidence is considered in the framework of the wave approach in the space—time domain. Simulated correlation functions and power spectral densities of the backscattered field are presented. They extend the earlier findings concerning the backscattered field formation and also confirm and refine a number of conclusions drawn earlier from the behavior of the field’s statistical moments. The simulation technique is free from approximations commonly used in the statistical analysis of the propagation problems and can be used to study the statistical properties of the scattered field in a wide range of time intervals, as well as to find the limits of applicability of the approximate methods. |
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