Title :
Implementation of the integral equation model for rough surfaces with generic isotropic autocorrelation functions
Author :
Nesti, G. ; De Quesada, R. Estevan ; López, J.M. ; Sieber, A.J.
Author_Institution :
Adv. Tech., Ispra, Italy
Abstract :
An implementation of the integral equation model applicable to rough isotropic surfaces is presented which makes use of Fourier transform numerical methods to compute the surface spectrum. Different approaches for performing the calculations are compared in terms of computational accuracy and efficiency. Optimum values for window size and sampling step are reviewed and illustrated in practical cases depending on the surface autocorrelation function and the operating frequency
Keywords :
Fourier transforms; backscatter; electromagnetic wave scattering; geophysical techniques; integral equations; radar cross-sections; radar theory; remote sensing by radar; Fourier transform numerical method; autocorrelation function; backscatter; generic isotropic autocorrelation functions; geophysical measurement technique; integral equation model; land surface; operating frequency; optimum window size; radar remote sensing; radar scattering; rough surface; sampling step; surface autocorrelation function; terrain mapping; Autocorrelation; Backscatter; Electronic mail; Fourier transforms; Frequency; Integral equations; Rough surfaces; Sampling methods; Scattering; Surface roughness;
Conference_Titel :
Geoscience and Remote Sensing, 1997. IGARSS '97. Remote Sensing - A Scientific Vision for Sustainable Development., 1997 IEEE International
Print_ISBN :
0-7803-3836-7
DOI :
10.1109/IGARSS.1997.606447
