ミリ波(50GHz)電波観測装置

抄録

The observations of the atmospheric absorption and the solar radio emission through the millimeter wave band are much required and so we produced the millimeter (50GHz) radio wave measuring system that is used for these observations. this paper is a report of this system and the results of our trial observatios. The system consists of the reflector antenna and the Dicke radiometer. The antenna is 1500mm-diameter main paraboloid with 150mm-diameter Cassegrain reflector and the 3-dB beamwidth at 6 mm is nearly 20'. The overall noise figure obtained is nearly 17-dB and the result of the traial run, the maximum sensibility is found to be nearly 5゜K when the time constant is 1 second.