Accession Number : AD0645030
Title : INVESTIGATION OF THE TURBULENT STRUCTURE AND DRIFT MOTIONS IN THE IONOSPHERE.
Descriptive Note : Final rept. 1 Apr 62-30 Jan 66,
Corporate Author : LOWELL TECHNOLOGICAL INST RESEARCH FOUNDATION MASS
Personal Author(s) : Gorman,James E. ; Bibl,Klaus ; Olson,Kirtland H. ; Reinisch,Bodo W.
Report Date : DEC 1966
Pagination or Media Count : 78
Abstract : A system that measures amplitude and phase within a high-frequency pulse of 2.35 MHz is described. Using a manually controlled precise gate, phase and amplitude information of each pulse are recorded on analog tape and later digitized for computer analysis. By connecting three antennas alternately to the receiver, the system is used for ionospheric drift measurements. Phase coherence of the receiver intermediate frequency with the pulse repetition rate permits an actual phase division in comparing the 60 kHz IF phase with a 15 kHz reference which follows the phase of one antenna. Thus the phase information becomes usable for drift analysis. Additionally, continuous records of phase path and absorption integral are available on charts for further studies of the E- and D-region. Continuous records of group and phase heights, as well as ionograms, permits classification of the type of the reflection layer. As shown, the fading pattern used for drift analysis originates mainly at the reflecting layer. This fact allows use of the reflection type for classification of the drift results. (Author)
Descriptors : (*IONOSPHERE, ATMOSPHERIC MOTION), (*IONOSPHERIC PROPAGATION, MEASUREMENT), DRIFT, PHASE MEASUREMENT, ATTENUATION, RADIOFREQUENCY PULSES, ATMOSPHERIC SOUNDING, RADIO EQUIPMENT, RECORDING SYSTEMS
Subject Categories : Atmospheric Physics
Distribution Statement : APPROVED FOR PUBLIC RELEASE