EM propagation and backscattering discrete model for medium of sparsely distributed lossy random particles

Abstract Electromagnetic wave propagation and backscattering from a random medium are studied. The random medium is modeled by discrete lossy dielectric scatterers, for which the dyadic scattering amplitudes and orientation statistics are known. A method is developed to compute the propagation and backscattering coefficients. The technique is valid for scatterers having characteristic dimensions comparable to a wavelength. The procedure is valid when the albedo of individual scatterers is small, that is, when the scatterers are highly absorbing. Numerical calculations for the propagation and backscattering coefficients are presented, and compared with the literature.

[1]  S. Seker,et al.  A simulation study of the cloud propagation model , 1999 .

[2]  N. Savage,et al.  Radio wave propagation through vegetation: Factors influencing signal attenuation , 2003 .

[3]  S. Seker.  Microwave backscattering from a layer of randomly oriented discs with application to scattering from vegetation , 1986 .

[4]  S. S. Seker,et al.  Radar cross-section of thin dielectric bodies , 1986 .

[5]  L. Felsen,et al.  Radiation and scattering of waves , 1972 .

[6]  A. Lakhtakia,et al.  Ellipsoidal Topology, Orientation Diversity and Correlation Length in Bianisotropic Composite Mediums , 2001 .

[7]  Roger H. Lang,et al.  Electromagnetic Backscattering from a Layer of Vegetation: A Discrete Approach , 1983, IEEE Transactions on Geoscience and Remote Sensing.

[8]  V. Twersky,et al.  Interface Effects in Multiple Scattering by Large, Low-Refracting, Absorbing Particles* , 1970 .

[9]  P. Ray,et al.  Broadband complex refractive indices of ice and water. , 1972, Applied optics.

[10]  Akira Ishimaru,et al.  Wave propagation and scattering in random media , 1997 .

[11]  Tom G. Mackay,et al.  Homogenisation of similarly oriented, metallic, ellipsoidal inclusions using the bilocally approximated strong-property-fluctuation theory , 2001 .

[12]  Leung Tsang,et al.  Radiative transfer theory for active remote sensing of half-space random media , 1978 .

[13]  L. Foldy,et al.  The Multiple Scattering of Waves. I. General Theory of Isotropic Scattering by Randomly Distributed Scatterers , 1945 .

[14]  Roger H. Lang,et al.  Vector solution for the mean electromagnetic fields in a layer of random particles , 1986 .

[15]  H. Weitzner,et al.  Perturbation Methods in Applied Mathematics , 1969 .

[16]  Multicomponents discrete propagation model of forest , 1995 .

[17]  Roger H. Lang,et al.  Electromagnetic backscattering from a sparse distribution of lossy dielectric scatterers , 1981 .