Removing the Electromagnetic Field of a Low-Frequency Dipole in Rocks,

Abstract

For short-ranges, transmission along rocks is cheaper and more reliable than competing methods. Signal attenuation, the basic drawback to this method, can be reduced by lowering transmission frequency. Theoretical and experimental studies have been carried out in the laboratory on the propagation of audio-frequency electromagnetic waves in the rocks of coal mines. The choice of an emitter has also been considered.

Document Details

Document Type
Technical Report
Publication Date
Sep 27, 1974
Accession Number
ADA008265

Entities

People

  • A. I. Bykh
  • I. F. Ogorodneichuk
  • I. Ya. Zhuravlev

Organizations

  • United States Army Foreign Science and Technology Center

Tags

DTIC Thesaurus Topics

  • Attenuation
  • Audio Frequency
  • Coal
  • Coal Mines
  • Electromagnetic Fields
  • Energy-Generating Resources
  • Fossil Fuels
  • Frequency
  • Materials
  • Organic Materials

Readers

  • Applied Combinatorial Optimization and Logic Circuit Design.
  • Electronics Engineering
  • Radio communications and signal processing.