Abstract
Electromagnetic scattering from targets buried in the fractal trees above rough ground plane generated by using stochastic Lidenmayer system (L-system), which including the second-order scattering from any adjacent two trunks and target-trunk pairs, is studied at L band. The finite-length multi-layer dielectric cylinder is used to model the trunk. Electromagnetic scattering model for two adjacent trunks and deterministic target (sphere)-trunks pairs above a rough surface ground plane was analyzed by using the reciprocity theorem and the image theory. The iterative algorithm and spherical vector wave function were used to calculate the scattering amplitude matrix of the finite-length multi-layer dielectric cylinder and sphere, respectively. The validity of the method was checked by numerical computations based on the moment method. Finally, the polarization angular correlation function (PACF) is calculated by using azimuthal angular averaging. It is found the polarization angular correlation function is more effective in suppressing the clutter that is due to the rough-surface and fractal trees, the PACF is more useful for the detection of the buried targets.
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