Accession Number:

ADA018229

Title:

An Evaluation of HF Ionospheric Backscatter Echoes

Descriptive Note:

Technical information series

Corporate Author:

GENERAL ELECTRIC CO SYRACUSE NY HEAVY MILITARY EQUIPMENT DEPT

Personal Author(s):

Report Date:

1975-11-01

Pagination or Media Count:

122.0

Abstract:

The characteristics of HF radar echoes reflected from ionization irregularities aligned along the lines of force of the earths magnetic field are discussed. The spatial-geographical extent of ionospheric backscatter echoes is estimated for an HF radar located in the midlatitudes with the antenna beam oriented toward the polar region. Utilizing experimental radar-ionospheric data acquired at frequencies between HF and UHF, an analysis is made of the amplitude and the cross-sectional area statistics of HF field-aligned echoes. The Doppler frequency variation, the frequency of occurrence and the diurnal and seasonal variation of ionospheric backscatter echoes and their correlation with solar geophysical conditions are also discussed.

Subject Categories:

  • Active and Passive Radar Detection and Equipment
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE