A Huygens Surface Approach to Antenna Implementation in Near-Field Radar Imaging System Simulations

Abstract

This study introduces a new hybrid approach to implementing the radar transmitters and receivers in the NAFDTD simulation software, by replacing the physical antennas with equivalent currents sheets on a surrounding closed surface. After validating the code for several simple scenarios, we present a large-scale simulation in the presence of multiple targets embedded in a rough ground environment. The model consists of an ultra-wideband, forward-looking radar imaging system, equipped with a multi-static antenna array and mounted on a forward-moving platform. The resulting scattering data from the 2-dimensional synthetic aperture are used in creating maps of the terrain in front of the platform via a time-reversal technique. We consider several target types, placed on the ground surface or buried, and clutter from rough surfaces with different statistics.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2015
Accession Number
ADA621245

Entities

People

  • Dahan Liao
  • Traian V. Dogaru

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Human Systems
  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Antenna Arrays
  • Antennas
  • Arrays
  • Clutter
  • Computational Science
  • Computers
  • Coordinate Systems
  • Detection
  • Frequency Bands
  • Geometry
  • Military Research
  • Near Field
  • Radar
  • Radar Imaging
  • Scattering
  • Simulations
  • Synthetic Aperture Radar

Readers

  • Computational Modeling and Simulation
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Radar Systems Engineering.