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| Sugar Grove Station ： ウィキペディア英語版 |
Sugar Grove Station
Sugar Grove Station is a United States government communications site located near Sugar Grove in Pendleton County, West Virginia operated by the National Security Agency (NSA). According to a 2005 article in the ''New York Times'', the site intercepts all international communications entering the Eastern United States. The activity falls under the Naval Information Operations Command (NAVIOCOM). In April 2013, the Chief of Naval Operations ordered that the site be closed by September 30, 2015, as "a result of the determination by the resource sponsor (Security Agency ) to relocate the command’s mission.”〔"(Disestablishment Navy Information Operations Command, Sugar Grove, WV )". Chief of Naval Operations. April 2014.〕
The site was first developed by the Naval Research Laboratory in the early 1960s as the site of a radio telescope〔 ("New Radio Telescope Is Man's Biggest Machine." ) ''Popular Science'', December 1959, pp. 85-86/250.〕 that would gather intelligence on Soviet radar and radio signals reflected from the moon and would gather radioastronomical data on outer space, but the project was halted in 1962 before the telescope construction was completed.〔David K. van Keuren, "Cold War Science in Black and White: US Intelligence Gathering and Its Scientific Cover at the Naval Research Laboratory, 1948-62," ''Social Studies of Science'', vol. 31, no. 2, ''Science in the Cold War'', (2001): 207-229.〕 The site was then developed as a radio receiving station. The site was activated as "Naval Radio Station Sugar Grove" on May 10, 1969, and two Wullenweber AN/FRD-10 Circulary Disposed Antenna Arrays (CDAAs) were completed on November 8, 1969. Numerous other antennas, dishes, domes, and other facilities were constructed in the following years. Some of the more significant radio telescopes on site are a dish (oldest telescope on site), a dish featuring a special waveguide receiver and a dish (largest telescope on site).
The site is part of the ECHELON communications network operated by the United States and its allies to intercept and process electronic telecommunications. The network operates many sites around the world including Waihopai Valley in New Zealand, Menwith Hill in the United Kingdom and Yakima, Washington.
Sugar Grove is located in an officially designated National Radio Quiet Zone that covers in West Virginia and Virginia. The zone was established by Congress in 1958 to facilitate its mission and that of the National Radio Astronomy Observatory located away at Green Bank in Pocahontas County, West Virginia.
==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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