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

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.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2012
Accession Number
ADA622085

Entities

People

  • Dahan Liao
  • Traian V. Dogaru

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Backscattering
  • Department Of Defense
  • Diameters
  • Dielectric Permittivity
  • Dielectric Properties
  • Electromagnetic Fields
  • Electromagnetic Radiation
  • Electromagnetic Scattering
  • Far Field
  • Frequency
  • Information Operations
  • Military Research
  • Numerical Analysis
  • Radar Cross Sections
  • Reliability
  • Scattering
  • Simulations

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Computational Fluid Dynamics (CFD)
  • Radar Systems Engineering.