VLF/LF (Very Low Frequency/Low Frequency) Reflection Properties of the Low Latitude Ionosphere

Abstract

Low latitude observations of VLF/LF pulse reflections from the lower ionosphere obtained at nine locations to the east and west of a transmitter in southeastern Brazil are described. The data provide a variety of information on the reflection properties of the ionosphere below about 90 km altitude. Aspects of the data are presented in quasi-dimensional formats useful for identifying ionosphere structure and variability, and detailed analyses of portions of the data provided, which characterize the effective heights of the reflection coefficients of the ionosphere at noon and midnight, over a frequency range from 15 to 65 kHz. Electron density models of the ionosphere, derived from VLF/LF reflection data are also discussed.

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Document Details

Document Type
Technical Report
Publication Date
Feb 04, 1988
Accession Number
ADA205976

Entities

People

  • John E. Rasmussen
  • Maria Sueli Da Silveira Macedo Moura
  • Paul A. Kossey
  • Wayne I. Klemetti

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Force
  • Altitude
  • Data Displays
  • Electron Density
  • Electrons
  • Frequency
  • High Altitude
  • Human-Machine Interaction
  • Ionosphere
  • Plane Waves
  • Radio Waves
  • Reflection
  • Security
  • Sky Waves
  • Three Dimensional
  • Transmitters
  • United States

Readers

  • Acoustical Oceanography.
  • Space/Atmospheric Physics.

Technology Areas

  • Microelectronics