IONOSPHERIC SELFMODULATION AT VERTICAL INCIDENCE THROUGH THE METHOD OF 'MODULATED PULSES'
NAPLES UNIV (ITALY)
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A series of experiments at oblique incidence on the phenomenon of the selfmodulation was accomplished from July 1st 1957 to November 30th 1959. To study the phenomenon during diurnal hours around the local gyrofrequency, a new technique, modulated pulses, was introduced. Through this technique, the behavior of the selfmodulation around the gyrofrequency was studied, measuring the height where the phenomenon occured and, for a certain height of D layer, a way of determining the total intensity of the terrestrial magnetic field was indicated. The experiments show that it is possible to observe a resonance curve with the top at the gyrofrequency. Author