THEORETICAL VLF MULTIMODE PROPAGATION PREDICTIONS

Abstract

A computer program in Fortran has been written for the Control Data Corporation (CDC) 3800 computer to predict the field strength of multimode very-low-frequency (vlf) propagation for distances from 0.5 megameters to 15 megameters. Although the propagation parameters used in the computations appear in various forms elsewhere in the literature, the curves presented here can be directly compared with experimental data without further computations. Curves based on the theoretical results for seawater paths are presented for frequencies between 8.0 kc/s and 30.0 kc/s for ionospheric heights of 70 km and 90 km.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1967
Accession Number
AD0663878

Entities

People

  • C. Jr B. Brookes
  • F. J. Rhoads
  • J. H. Mccabe

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Abstracts
  • Coefficients
  • Computations
  • Computer Programs
  • Computers
  • Electric Fields
  • Equations
  • Experimental Data
  • Frequency
  • Ionosphere
  • Military Research
  • Multimode
  • Radio Waves
  • Reflection
  • Transmitters
  • Very Low Frequency
  • Wave Propagation

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Astronomy and Astrophysics.
  • Computer Science.