Large-Scale, Full-Wave Scattering Phenomenology Characterization of Realistic Trees: Preliminary Results

Report No. ARL-TR-7487
Authors: DaHan Liao and Traian Dogaru
Date/Pages: September 2015; 18 pages
Abstract: Scattering characterization of realistic tree structures is performed to facilitate the development of low-frequency (P-band) foliage-penetration radars. The full-wave analysis approach employs a parallelized 3-dimensional finite-difference time-domain (FDTD) algorithm deployed on high performance computer systems to simulate the far-field electromagnetic responses of foliage scenes. The scattering behavior of a single tree is first considered as a function of frequency, polarization, signal incidence angle, and structural fidelity, and then large-scale simulations are carried out to examine the responses of a forest stand in both the frequency and imaging domains. The results featured are from the first phase of an ongoing study to investigate the feasibility of applying large-scale electromagnetic simulations to support airborne-based sensing of obscured ground targets.
Distribution: Approved for public release
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Last Update / Reviewed: September 1, 2015