Research Papers

Grazing angle scattering of electromagnetic waves based on an improved two-scale model

[+] Author Affiliations
Naheed Sajjad

COMSATS Institute of Information Technology, 22060, Abbottabad, Pakistan

Ali Khenchaf

ENSTA Bretagne, Lab-Sticc UMR CNRS 6285 Laboratory, 29806, Brest Cedex 9, France

Sajjad Ali Mushtaq

COMSATS Institute of Information Technology, 22060, Abbottabad, Pakistan

J. Appl. Remote Sens. 7(1), 073571 (May 03, 2013). doi:10.1117/1.JRS.7.073571
History: Received May 21, 2012; Revised April 2, 2013; Accepted April 10, 2013
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Abstract.  Remote sensing applications require developing accurate models to predict radar bistatic scattering from random rough surfaces. In this context, an improved two-scale model (TSM) is developed. The simplest TSM (TSM1) combines the first order small perturbation method (SPM1) with geometrical optics (GO) to be able to cope with both the small- and large-scale components of the surface. To get improved results at grazing angles and better depolarization estimation, we include the effects of multiscattering due to the target surface by adding the second order SPM (SPM2) contribution to SPM1 at small scale and develop an improved TSM (TSM2). The applications of TSM2 are presented for sea surface by assuming the surface-height spectrum of Elfouhaily et al., at grazing angles. In the backscattering configuration the numerical results are compared with the published experimental data and other approximate analytical models. Finally, we use the TSM2 to predict the sea scattering in the bistatic configuration and compare the results with TSM1.

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© 2013 Society of Photo-Optical Instrumentation Engineers

Citation

Naheed Sajjad ; Ali Khenchaf and Sajjad Ali Mushtaq
"Grazing angle scattering of electromagnetic waves based on an improved two-scale model", J. Appl. Remote Sens. 7(1), 073571 (May 03, 2013). ; http://dx.doi.org/10.1117/1.JRS.7.073571


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