Vortex (satellite)

Vortex (satellite)
DNI depiction of a NRO SIGINT satellite

Vortex, previously known as Chalet, is a class of spy satellite operated by the United States during the 1980s and 1990s to collect signals intelligence (SIGINT) from high Earth orbit. The Vortex satellites were operated by the National Reconnaissance Office for the United States Air Force and listened to radio transmissions originating from Earth or space. The intercepted data is believed to have been fed into and analyzed by the National Security Agency ECHELON system.

The satellites weigh approximately 1,800 kilograms and are operated from geosynchronous orbits. Each reportedly carried a 38-meter-diameter umbrella-like reflecting dish to collect radio signals from Earth. At least six launch attempts were made of Chalet/Vortex satellites between 1978 and 1989. The Chalet/Vortex satellites replaced the older generation of Canyon satellites, and were superseded by the larger, more capable Mercury SIGINT satellites.

Contents

Launches

Vortex satellite footprints
Vortex satellite footprints
Satellite Launch NORAD Number Notes
Chalet 1 10 June 1978 (OPS 9454) COSPAR ID: 1978-058A
Chalet 2 1 October 1979 (OPS 1948) 1979-086A
Chalet 3 31 October 1981 (OPS 4029) 1981-107A
Vortex 4 31 January 1984 (OPS 0441) 1984-009A
Vortex 5 2 September 1988 (USA 31) 1988-077A
Vortex 6 10 May 1989 (USA 37) 1989-035A

See also

External links

References

  • Richelson, Jeffrey T. ed. U.S. Military Uses of Space, 1945-1991 Vol 1, Guide. National Security Archive. 1991.

Wikimedia Foundation. 2010.

См. также в других словарях:

  • Vortex (disambiguation) — A vortex is a dynamic phenomenon of fluids.Vortex may also refer to:In amusement: * Vortex (California s Great America), a stand up roller coaster at California s Great America in Santa Clara, California, United States * Vortex (Canada s… …   Wikipedia

  • Satellite temperature measurements — have been obtained from the troposphere since 1978. By comparison, the usable balloon (radiosonde) record begins in 1958.Satellites do not measure temperature as such. They measure radiances in various wavelength bands, which must then be… …   Wikipedia

  • Satellite-espion —  Pour l’article homonyme, voir satellite.  Satellite KH 4B Corona …   Wikipédia en Français

  • Satellite de reconnaissance — Satellite espion  Pour l’article homonyme, voir satellite.  Satellite KH 4B Corona …   Wikipédia en Français

  • Satellite de positionnement — Global Positioning System Pour les articles homonymes, voir GPS (homonymie). Le Global Positioning System plus connu par son sigle GPS, que l on peut traduire en français par « système de positionnement mondial » ou encore (en… …   Wikipédia en Français

  • Satellite espion —  Pour l’article homonyme, voir satellite.  Satellite KH 4B Corona …   Wikipédia en Français

  • Mercury (satellite) — MERCURY (sometimes called Advanced VORTEX ) is reportedly the name of a series of three United States spy satellites launched in the 1990s. These satellites were launched and operated by the National Reconnaissance Office with the participation… …   Wikipedia

  • Multiple vortex tornado — Multi vortex tornado near Tushka, Oklahoma on April 14, 2011 …   Wikipedia

  • Jardin Vortex — Flowform, à Darmstadt Le Jardin Vortex (Vortex Garten) est un jardin panthéiste, cultivé selon les principes de la permaculture et situé sur la Mathildenhöhe, à Darmstadt, non loin de Francfort sur le Main. Les œuvres de plusieurs sculpteurs de… …   Wikipédia en Français

  • Trash vortex — Plaque de déchets du Pacifique nord Demande de traduction Great Pacific Garbage Patch → …   Wikipédia en Français


Поделиться ссылкой на выделенное

Прямая ссылка:
Нажмите правой клавишей мыши и выберите «Копировать ссылку»