ATS-6 40- and 360-MHz Differential Phase Measurements

Abstract

Equipment employing new cross-correlation design concepts for receiving and processing weak rf signals in a noisy environment is described. It is shown how this equipment becomes an integral part of the instrumentation for measuring the differential phase between the ATS-6 satellite 40- and 360-MHz coherent cw signals that have been propagated through the ionosphere. The relationship between 40-MHz phase and amplitude scintillation was developed using differential phase data from the ATS-6 geostationary satellite. The 40- and 360-MHz coherent signals were propagated through the ionosphere and received on the 150-ft radio telescope at the Sagamore Hill Radio Observatory. The influence that the traveling ionospheric disturbances (TID) have on the phase of the 40-MHz signal receives special emphasis, and it is shown how the presence of TID aids in the analysis.

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Document Details

Document Type
Technical Report
Publication Date
Jun 02, 1976
Accession Number
ADA030739

Entities

People

  • Frederick F. Slack

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Artificial Satellites
  • Cross Correlation
  • Detectors
  • Electron Density
  • Electrons
  • Frequency
  • Geosynchronous Satellites
  • Ionospheric Disturbances
  • Ionospheric Scintillation
  • Local Oscillators
  • Magnetic Fields
  • Measurement
  • Oscillators
  • Phase Detectors
  • Phase Measurement
  • Refractive Index
  • Repetition Rate

Fields of Study

  • Physics

Readers

  • Astronomy and Astrophysics.
  • Phased Array Antenna Design.
  • Space/Atmospheric Physics.

Technology Areas

  • Space