Accession Number : AD0264312

Title :   LUNAR REFLECTION STUDIES

Corporate Author : GENERAL ELECTRIC CO SYRACUSE N Y

Report Date : 06 JUL 1961

Pagination or Media Count : 1

Abstract : Research is concerned with the possibility of establishing a lunar reflection radio communication path. The ever changing multipath structure of the lunar propagation path creates distortions of several types on signals reflected from the moon. These distortions serve to limit the coherent bandwidth of the path, limiting the usefulness of the moon for communication purposes. Tests were conducted utilizing double sideband suppressed carrier transmissions at 915 Mc. The amplitudes of each sideband were recorded, and cross-correlation coefficients computed for various sideband frequency separations. The results show that the moon has a very low coherent bandwidth which is less than 1000 cps if stringent requirements are placed on the required quality of the transmission path. These results are compared to those obtained by tropospheric scatter and Echo satellite reflection, showing that the poor sideband correlation and resulting signal distortion are uniquely due to the moon. (Author)

Descriptors :   *COMMUNICATION AND RADIO SYSTEMS, AMPLIFIERS, ANTENNAS, ATTENUATION, CORRELATION TECHNIQUES, DATA TRANSMISSION SYSTEMS, DOPPLER RADAR, ELECTROMAGNETIC WAVE REFLECTIONS, FEASIBILITY STUDIES, FREQUENCY SHIFT, MEASUREMENT, MOON, MULTIPATH TRANSMISSION, PARABOLIC ANTENNAS, PARAMETRIC AMPLIFIERS, PROPAGATION, RADIO EQUIPMENT, RADIO RECEIVERS, RADIO SIGNALS, RADIO TRANSMITTERS, RADIO WAVES, REFLECTION, SIDEBANDS, TEST EQUIPMENT, ULTRAHIGH FREQUENCY

Distribution Statement : APPROVED FOR PUBLIC RELEASE