High-Resolution Over-the-Horizon Radar Using Time Reversal

Abstract

This report describes an over-the-horizon radar with a high-resolution imaging capability using time reversal. By incorporating the extended virtual aperture concept enabled by multipath interference into a double-pass conjugate image scanning scheme, high-resolution radar imaging can be achieved without requiring extensive computation or a priori knowledge of environmental conditions. Initial proof-of-concept experimental results on several key features of time reversal, such as reciprocity, temporal focusing, spatial focusing, multipath-enabled extended virtual aperture, and polarization diversity time reversal, are demonstrated at HF or VHF.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Dec 07, 2009
Accession Number
ADA514533

Entities

People

  • Eung-gi Paek
  • Jeffrey Horlick
  • Joon Y. Choe
  • P. A. Bernhardt

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Antenna Arrays
  • Antennas
  • Diffraction
  • Frequency
  • High Resolution
  • Ionosphere
  • Multipath Interference
  • Over The Horizon Radar
  • Radar
  • Radar Imaging
  • Scanning
  • Scattering
  • Sky Waves
  • Time Domain
  • Wave Propagation
  • Waveform Generators
  • Waveforms

Fields of Study

  • Physics

Readers

  • Optical Physics and Photonics.
  • Phased Array Antenna Design.
  • Wave Propagation and Nonlinear Chaotic Dynamics.