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A Fresnel double scattering (FDS) method is presented in this paper to accurately and efficiently calculate the scattering cross section from two tree branches not necessarily in the far field of each other at L-band frequencies. The branches, modeled as dielectric cylinders, are assumed to have lengths comparable to one or more wavelengths. It is demonstrated that the FDS method provides a good approximation...
A numerical Fresnel Double Scattering (FDS) method is presented in this paper to accurately calculate the bistatic cross sections due to double scattering between two lossy dielectric cylinders in the Fresnel zone of each other. The cylinders have a comparable size to the wavelength for L band frequencies. It is demonstrated that the FDS results reduce to the far field results when the scatterers...
A Fresnel Double Scattering (FDS) method is presented in this paper to accurately and efficiently calculate the backscattering cross sections from two tree branches in the Fresnel zone of each other. The branches have a comparable size to the wavelength for L band frequencies in length and in radius. It is demonstrated that the FDS results provide a good approximation to the exact solutions where...
Vegetation scattering problems in L band contain plant or tree components in the near field of each other. In this case, the interleaf or inter-branch interaction effect becomes more significant. In this paper, scattering properties from a cluster of plant or tree components are analyzed to study the interaction effect in the cluster. A numerical approach, the Discrete Dipole Approximation, is applied...
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