Accession Number : ADA116838

Title :   Techniques for Doppler Spectral Estimation of HF Radar Signals Backscattered from High Latitude Ionospheric Irregularities.

Descriptive Note : Final technical rept. 1 Oct 80-30 Sep 81,

Corporate Author : JOHNS HOPKINS UNIV LAUREL MD APPLIED PHYSICS LAB

Personal Author(s) : Greenwald,Raymond A

PDF Url : ADA116838

Report Date : Jun 1982

Pagination or Media Count : 43

Abstract : This report examines various techniques for studying the Doppler spectrum of radar signals backscattered from high latitude ionospheric irregularities, Both pulsed and FM-CW techniques are considered and it is found that most approaches suffer from the need to have sufficiently high pulse or sweep repetition frequencies while at the same time avoiding range aliasing of the backscattered signals.

Descriptors :   *F region, *Radar signals, *Spectrum analysis, High latitudes, Backscattering, Doppler effect, Spectra, Radar pulses, Continuous waves, Variations

Subject Categories : Atmospheric Physics
      Active & Passive Radar Detection & Equipment
      Electromagnetic Pulses

Distribution Statement : APPROVED FOR PUBLIC RELEASE