Aperture synthesis radio interferometer

Japanese: 開口合成電波干渉計 - かいこうごうせいでんでんぱかんしょうけい
Aperture synthesis radio interferometer

…In an attempt to obtain the highest possible resolution with a small number of antennas, various irregular array methods have been considered. In particular, for celestial bodies that do not show rapid time variations, aperture synthesis radio interferometers are widely used, in which the antennas are moved to different positions to change the array, or the antenna array direction changes with the rotation of the Earth (called aperture synthesis radio interferometers). This makes it possible to obtain a two-dimensional image with high resolution by observing over a long period of time with only a few antennas. …

*Some of the terms used in the definition of "aperture synthesis radio interferometer" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…少ない数のアンテナでできるだけ高い分解能を得ようとして,さまざまな形の変則的配列法も考えられている。なかでも,はやい時間変動を示さない天体に対しては,アンテナの設置位置を可動にして配列を変えたり,あるいは地球回転によってアンテナの配列方向が変わることを利用した開口合成型の電波干渉計(これを開口合成電波干渉計と呼んでいる)が広く用いられている。これによって,わずか数個のアンテナでも時間をかけて観測することによって,高い分解能をもつ二次元像を得ることが可能である。…

※「開口合成電波干渉計」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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