Journal article
A comparison of scattering model results for two-dimensional randomly rough surfaces
IEEE transactions on antennas and propagation, Vol.40(12), pp.1505-1512
12/1992
Handle:
https://hdl.handle.net/2376/115106
Abstract
Bistatic radar cross sections are calculated using two modern scattering models: the small slope approximation (both first- and second-order), and the phase perturbation technique. The problem is limited to scalar-wave scattering from two-dimensional, randomly rough Dirichlet surfaces with a Gaussian roughness spectrum. Numerical results for the cross sections are compared to those found using the classical Kirchhoff, or physical optics, approximation and perturbation theory. Over a wide range of scattering angles, the new results agree well with the classical results when the latter are considered to be accurate. A comparison between the new results shows that the phase perturbation method gives better results in the backscattering region for correlation lengths greater than approximately one wavelength, while both the first- and second-order small slope approximations yield greater accuracy in the forward scattering direction at low grazing angles.< >
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Details
- Title
- A comparison of scattering model results for two-dimensional randomly rough surfaces
- Creators
- T Yang - Sch. of Electr. Eng. & Comput. Sci., Washington State Univ., Pullman, WA, USAS.L Broschat - Sch. of Electr. Eng. & Comput. Sci., Washington State Univ., Pullman, WA, USA
- Publication Details
- IEEE transactions on antennas and propagation, Vol.40(12), pp.1505-1512
- Publisher
- IEEE
- Identifiers
- 99900547536601842
- Language
- English
- Resource Type
- Journal article