Title :
Analytical, experimental, and numerical studies of angular memory signatures of waves scattered from 1-dimensional rough surfaces
Author :
Kuga, Yasuo ; Le, Charlie T C ; Ishimaru, Akira
Author_Institution :
Dept. of Electr. Eng., Washington Univ., Seattle, WA, USA
Abstract :
It is known that a change in the direction of an incident wave on a random medium is “remembered” by the scattered wave in the angular correlation characteristics. This “memory effect” is studied for rough surface scattering by means of theoretical (second-order Kirchhoff approximation (KA)), numerical (Monte Carlo simulations) and experimental (millimeter-wave range) approaches. The second-order KA has been found to be effective for wave scattering from very rough surfaces with large radii of curvature and high slopes (0.5 to 1.5). The results are presented in a form of memory signatures which clearly exhibit the important features of this effect
Keywords :
backscatter; electromagnetic wave scattering; geophysical techniques; ocean waves; oceanographic techniques; radar cross-sections; Monte Carlo simulation; analytical theory; angular correlation characteristics; angular memory signature; backscatter; geophysical measurement technique; incident wave; land surface; memory effect; numerical model; ocean; one dimensional rough surface; radar remote sensing; radar scattering; sea surface; second-order Kirchhoff approximation; terrain mapping; Electromagnetic scattering; Frequency; Kirchhoff´s Law; Optical scattering; Optical surface waves; Random media; Rough surfaces; Shadow mapping; Surface roughness; Surface waves;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1996. IGARSS '96. 'Remote Sensing for a Sustainable Future.', International
Conference_Location :
Lincoln, NE
Print_ISBN :
0-7803-3068-4
DOI :
10.1109/IGARSS.1996.516910
