Accession Number : AD0603797

Title :   ON A NEW METHOD FOR EXPLORING THE UPPER IONOSPHERE,

Corporate Author : RAND CORP SANTA MONICA CALIF

Personal Author(s) : Bailey,Dana K.

Report Date : 03 OCT 1947

Pagination or Media Count : 18

Abstract : The extensiveness and intensity of the ionization in the region above the height of maximum ionization of the F2 layer of the ionosphere is not known. It is shown that measurements of the refraction experienced by radio waves arriving at the earth after passage through the entire ionosphere can yield information about the uppermost regions of the ionosphere. An expression for the refraction of radio waves which pass through a parabolic layer model is derived. This permits a range of frequencies to be specified within which profitable refraction measurements can be made. Either the sun, which emits radio waves in the form of noise, or the moon, which can be used to return radio waves originating on the earth, is a suitable extraterrestrial source of radio waves. An experimental technique for measuring refraction is described and discussed. (Author)

Descriptors :   (*IONOSPHERE, IONIZATION), (*REFRACTION, IONOSPHERE), ELECTRON DENSITY, EXTRATERRESTRIAL RADIO WAVES, MEASUREMENT, RADIO RECEPTION, ANGLE OF ARRIVAL, ANTENNAS, EQUATIONS

Distribution Statement : APPROVED FOR PUBLIC RELEASE