Interpretation of Quasi-Perriodic Scintillation at Frequencies above 1 GHz


IEICE TRANSACTIONS (1976-1990)   Vol.E70   No.8   pp.768-774
Publication Date: 1987/08/25
Online ISSN: 
Print ISSN: 0000-0000
Type of Manuscript: PAPER
Category: Antennas and Propagation

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A typical event of quasi-periodic scintillations measured simultaneously at 1.5 GHz and 4 GHz is presented. Moreover, the probable electron density and spatial scale of irregularities in the ionosphere necessary for producing such a phenomenon are evaluated. Results indicate that estimated electron density at the center of a columnar irregularity assumed in the ionospheric E- or F-region ranges from 2 1012 to 2 1013(m-3), the value of which represents a level several to several hundred times as high as the average ionospheric electron density. In addition, such irregularities must have small effecctive radii of 100 to 300 meters.