LINEAR FM VERTICAL SOUNDER FOR IONOSPHERIC DISTORTION CORRECTION

Abstract

A linear FM vertical sounder has been designed and implemented in order to demonstrate the feasibility of real-time correction of ionospheric distortions. The system is monostatic, relying on chopping for transmitter/receiver isolation. All signal waveforms, local oscillator and correction signals are derived from a specially-modified, programmed Hewlett Packard frequency synthesizer. Results indicate a capability of making real-time corrections over bandwidths of up to 900 kHz and time periods of several seconds.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1969
Accession Number
AD0699583

Entities

People

  • B. D. Perry
  • D. J. Belknap
  • D. R. Bungard
  • L. A. Hart

Organizations

  • MITRE Corporation

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Air Force
  • Attenuation
  • Attenuators
  • Computer Programming
  • Detectors
  • Field Effect Transistors
  • Frequency Standards
  • Frequency Synthesizers
  • Harmonic Generators
  • Impedance
  • Ionograms
  • Local Oscillators
  • Massachusetts
  • Phase Detectors
  • Power Gain
  • Signal Processing
  • Standards

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Radar Systems Engineering.
  • Space/Atmospheric Physics.