Title :
A numerical study of the composite surface model for ocean scattering
Author :
Johnson, Joel T. ; Shin, R.T. ; Kong, J.A. ; Tsang, L. ; Pak, K.
Author_Institution :
Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA
Abstract :
A numerical study of ocean backscattering for surfaces rough in two dimensions is presented. The numerical model is based on Monte Carlo simulation using the sparse matrix-flat surface iterative approach with canonical grid (SMFSIA/CAG), which is a more efficient version of the method of moments that allows large two dimensional surfaces to be treated. Backscattering cross sections are illustrated for perfectly conducting power law spectrum ocean surface models at angles from 0 to 60 degrees from normal incidence. Variations with surface spectrum low frequency cutoff (ranging over spatial lengths from 64 λ to 2 λ) are investigated, and demonstrate the accuracy of the composite surface model
Keywords :
S-matrix theory; backscatter; electromagnetic wave scattering; oceanographic techniques; radar cross-sections; radar theory; remote sensing by radar; Monte Carlo simulation; S-matrix; backscatter; canonical grid; composite surface model; measurement technique; numerical model; ocean; radar remote sensing; radar scattering; rough surface; sea surface; sparse matrix-flat surface iterative approach; two dimensional surface; Backscatter; Iterative methods; Moment methods; Numerical models; Oceans; Rough surfaces; Sea surface; Sparse matrices; Surface roughness; Surface treatment;
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.1996.516676
