MU RadarThe MU (Middle and Upper atmosphere) radar was constructed by Radio Atmospheric Science Center of Kyoto University at Shigaraki, Shiga prefecture, Japan (34.85deg N, 136.11deg E) in 1984 mainly for the purpose of investigating atmospheric and plasma dynamics in the wide region from the troposphere to the ionosphere.
The radar is a powerful monostatic pulse Doppler radar operating at 46.5MHz with an active phased array antenna, which consists of 475 crossed Yagi antennas and identical number of solid-state transmit/receive modules. This design realized a very fast beam steerability. The antenna beam direction can be switched to any direction within the steering range of 30deg from zenith from pulse to pulse. The antenna aperture is 8,330m^2 (103m in diameter), and the peak and average output power is 1MW and 50kW, respectively. The antenna beam has a conical shape with the round-trip (two-way) half-power beamwidth of 2.6deg.
MU Radar Page (Radio Atmospheric Science Center)
List of debris observed with the MU radar
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