Mitigation of Coupling in RF Tomography with Applications to Belowground Sensing

Abstract

In imaging applications based on RF Tomography coupling between transmitters and receivers is a principal technical challenge to be overcome. To mitigate the coupling, we propose to activate different transmitters simultaneously, and determine their respective current source distribution in order to create electric field nulls at desired points (e.g., the receivers). The current design problem must take into consideration physical and system constraints of the radiators. As such, the current design must be formulated as a nonlinear programming problem. These constraints are discussed in details, and our method is validated using FDTD simulations.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 2010
Accession Number
ADA538931

Entities

People

  • Lee K. Patton
  • Lorenzo L. Monte
  • Michael C. Wicks

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Coordinate Systems
  • Couplings
  • Detection
  • Dielectric Permittivity
  • Electric Fields
  • Forward Scattering
  • Frequency
  • Imaging Techniques
  • Military Research
  • Scattering
  • Simulations
  • Three Dimensional
  • Tomography
  • Transmitters
  • Underground Facilities

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Operations Research
  • Systems Analysis and Design