Accession Number : AD0437587


Title :   AN EXPERIMENTAL STUDY OF RAPID PHASE FLUCTUATIONS INDUCED ALONG A SATELLITE - TO EARTH PROPAGATION PATH,


Corporate Author : MICHIGAN UNIV ANN ARBOR INST OF SCIENCE AND TECHNOLOGY


Personal Author(s) : Porcello,Leonard J


Report Date : Apr 1964


Pagination or Media Count : 125


Abstract : An experiment is described which has as its objective the examination of high-frequency phase fluctuations induced by the atmosphere along a satellite-to-ground propagation path. The phase fluctuations of interest lie in a spectral band ranging from approximately 0.1 cps to a maximum of 3 kc; the radio frequencies employed range from 54 to 400 Mc. The ionosphere-induced component of the observed phase fluctuation is of primary interest. Two classes of measurement are discussed; the first relies only upon use of a single highly stable sinusoidal emission from the satellite, whereas the second requires the emission of two harmonically related sinusoids, coherent with each other. (Author)


Descriptors :   *ARTIFICIAL SATELLITES , RADIO WAVES , PHASE SHIFT CIRCUITS , EARTH(PLANET) , PROPAGATION , FREQUENCY , RADIOFREQUENCY OSCILLATORS , MEASUREMENT , BANDWIDTH , RADIOFREQUENCY SPECTROSCOPY , IONOSPHERE , ANALOG COMPUTERS , ELECTRON DENSITY , ERRORS , WAVE PROPAGATION


Distribution Statement : APPROVED FOR PUBLIC RELEASE