Accession Number : AD0699029

Title :   IRREGULARITIES IN THE LOWER IONOSPHERE DEDUCED FROM BEACON SATELLITE OBSERVATIONS,

Corporate Author : UNIVERSITY OF WESTERN ONTARIO LONDON CENTRE FOR RADIO SCIENCE

Personal Author(s) : Holbrook,J. A. D. ; Lyon,G. F.

Report Date : 15 MAY 1968

Pagination or Media Count : 13

Abstract : Field strength measurements of the 20 MHz transmission from Explorer 22 have been made at London, Ontario, Canada (43 degrees N, 81 degrees W). It was possible to perform such measurements unambiguously only during quiet ionospheric conditions. Most daytime observations showed evidence of the presence of electron density fluctuations whereas night-time observations were nearly always smooth. Interpretation of the results in terms of non-derivative absorption along the ray paths suggests that the irregularities observed are occurring at the 70 km height level and are probably the same as those thought to be responsible for the continuous signal received on high power VHF forward scatter circuits. (Author)

Descriptors :   (*IONOSPHERIC DISTURBANCES, MEASUREMENT), ELECTRON DENSITY, NAVIGATION SATELLITES, MAGNETOOPTICS, IONOSPHERIC PROPAGATION, RADIO SIGNALS, VERY HIGH FREQUENCY, CANADA

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE