Scattering Cross Sections for Composite Models of Non-Gaussian Surfaces for Which Decorrelation Implies Statistical Independence.
Interim rept. 1 Mar-30 Nov 82,
NEBRASKA UNIV LINCOLN
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The full wave approach is used to determine the scattering cross sections for composite models of non-Gaussian rough surfaces. It is assumed in this work that the rough surface heights become statistically independent when they decorrelate, thus no delta function type specular term appears in the expression for the scattered fields. The broad family of non-Guassian surfaces considered range in the limit from exponential to Gaussian. It is seen that for small angles of incidence, the like polarized cross sections have the same dependence on the special form of the surface height joint probability density, but for large angles the scattering cross sections for the horizontally polarized waves are much more sensitive to the special form of the joint probability density. The corresponding results for the depolarized backscatter cross section are also presented. The shadow functions are shown to be rather insensitive to the special form of the joint probability density. Author
- Statistics and Probability
- Radiofrequency Wave Propagation