NUMERICAL SOLUTIONS FOR THE SCATTERED FIELDS FROM ROUGH SURFACES USING THE FULL WAVE GENERALIZED TELEGRAPHISTS' EQUATIONS
✍ Scribed by EZEKIEL BAHAR; YUZHI ZHANG
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 372 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0894-3370
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✦ Synopsis
A numerical method is used to solve the integro-differential generalized telegraphists' equations for the total (single and multiple) diffusely scattered radiation wave amplitudes. These equations were derived using a full wave approach. The singularities of the scattering coefficients are removed on integrating by parts. A stationary phase approximation is used to obtain the far fields. The numerical solutions are obtained for one-dimensional deterministic surfaces. The numerical results for the total (single and multiple) diffusely scattered fields are in good agreement with the earlier single scatter analytical results when the maximum surface slope is less than 30 degrees. The earlier single scatter analytical solutions are based on the assumption that the total field impressed upon a rough surface is associated with the incident field only. This assumption is not made for the evaluation of the numerical results presented here. The earlier analytical results are in total agreement with the small perturbation results when the rough surface height and slopes are of the same order of smallness.