Computer-Program Model for Predicting Horizontally and Vertically Polarized VLF Atmospheric Radio Noise at Elevated Receivers

Abstract

A computer program has been developed that can predict horizontally and vertically polarized atmospheric radio noise at any altitude or location in the earth-ionosphere waveguide in the very-low-frequency (VLF) range from 10 to 30 kHz. The new program, HORNS, uses the outputs of two previously written programs, COMPWR and NOISLAN, which predict the vertical electric noise field at the ground. The HORNS program computes all the field components at any altitude using the vertical electric field at the earth's surface as a basis. Predicted values from several versions of the new model have been compared with presently available data. The results are encouraging, but more data are needed to test the model.

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Document Details

Document Type
Technical Report
Publication Date
Dec 28, 1981
Accession Number
ADA109448

Entities

People

  • F. J. Rhoads
  • Francis J. Kelly
  • J. P. Hauser

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aircrafts
  • Classification
  • Computer Programs
  • Electric Fields
  • Electromagnetic Fields
  • Frequency
  • High Altitude
  • Jet Aircraft
  • Loop Antennas
  • Magnetic Fields
  • Noise (Radio)
  • Numbers
  • Radio Waves
  • Space Sciences
  • Standards
  • Very Low Frequency
  • Wave Propagation

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Computer Science.
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering