Middle and upper atmosphere radar (MUR) under design in Japan | Zendy

Fukao S. | Zendy; Kato S. | Zendy; Aso T. | Zendy; Sasada M. | Zendy; Makihira T. | Zendy

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Middle and upper atmosphere radar (MUR) under design in Japan

Author(s) -

Fukao S.,

Kato S.,

Aso T.,

Sasada M.,

Makihira T.

Publication year - 1980

Publication title -

radio science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.371

H-Index - 84

eISSN - 1944-799X

pISSN - 0048-6604

DOI - 10.1029/rs015i002p00225

Subject(s) - atmosphere (unit) , radar , antenna (radio) , amplifier , aperture (computer memory) , phase (matter) , optics , power (physics) , phased array , remote sensing , physics , telecommunications , computer science , electrical engineering , acoustics , geology , engineering , bandwidth (computing) , meteorology , quantum mechanics

A large MST radar for observing backscattering from refractive index fluctuations in the middle and upper atmosphere is now under design in Japan. The proposed system is a pulse‐modulated monostatic radar, working at a frequency near 48 MHz. The configuration will be quite different from the existing MST/ST radars. A quasi‐square array with an aperture of 10 4 m 2 is composed of 456 Yagi antennas, each of which is provided with a low‐power amplifier. A peak output power of more than 1 MW is envisaged to be generated when the whole system is coherently activated. In this system a phase shift is obtainable at a low power level by variable phase shifters controlled by electronic means, which enable rapid and continuous scanning of the antenna. The whole system is monitored and controlled by a microcomputer network.

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