A High Resolution Statistical Characterization of Fading on Meteor Communication Channels.

Abstract

This documents describes the second part of statistical study of fading on meteor communication channels based on data obtained from the Geophysics Laboratory's High Latitude Meteor Scatter Test Bed. In this experiment the sampling rate is increased from 100 Hz to 2000 Hz to provide resolution of 0.5 ms. Trails at 45 MHz from both the Sondrestrom Thule, and Sondrestrom Narsarsuaq links are considered. Trails are classified as underdense or overdense using a modified version of the GL automatic classification routine. Trails are then analyzed for fades with depths exceeding 3,6, and 9 dB relative to a 10 dB Signal-to-Noise threshold. Signal-to-noise ratios are considered relative to bandwidths which vary from 4.8 kHz to 128 kHz. Statistics are computed as a function of frequency, time of day, and trail type for the first D seconds of a trail, where D = 50, 100, 200, 400, and 600 ms. The experiment considers fades with 1 ms minimum duration with a resolution of 0.5 ms.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1990
Accession Number
ADA235548

Entities

People

  • Jay A. Weitzen
  • Jens C. Ostergaard
  • Siu W. Li

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Air Force
  • Availability
  • Communication Channels
  • Data Analysis
  • Data Sets
  • Distribution Functions
  • Geophysics
  • High Latitudes
  • High Resolution
  • Low Resolution
  • Meteor Burst Communications
  • Probability
  • Probability Distribution Functions
  • Probability Distributions
  • Security
  • Test Beds

Readers

  • Regression Analysis.
  • Space/Atmospheric Physics.