Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978dubr.iafcq....n&link_type=abstract
International Astronautical Federation, International Astronautical Congress, 29th, Dubrovnik, Yugoslavia, Oct. 1-8, 1978, 10 p
Astronomy and Astrophysics
Astronomy
Lunar Radar Echoes, Radar Astronomy, Histories, Microwave Equipment, Microwave Transmission, Signal Processing, Signal To Noise Ratios, Very High Frequencies
Scientific paper
On February 6, 1946, Zoltan Bay (1946) and coworkers, using a modified reconnaissance radar at 120 MHz, succeeded in detecting radar echoes from the moon. Without a crystal controlled system, a wide bandwidth was used in the receiver before detection, and reduction of bandwidth was performed after detection. The experiments were repeated many times, and all the feeble echo amplitudes were summed above the statistical sum of the noise amplitudes. About a thousand pulses had to be integrated over a period of 50 minutes. Integration was performed by a bank of switched voltmeters. This method would later prove useful in radio astronomy.
Nagy I. G.
Vajda P.
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