Spy satellite

A spy satellite is an Artificial satellite whose object is obtaining information on foreign countries or civil or military installations, sometimes without their knowledge.

Method

This satellite can proceed by the optical observation of the Ground (taken Photographie S), the observation radar, or by listening and recording of the communications radio. Its applications are soldiers or " commerciales" with an aim of recovering Given S likely to help with decision making strategic. The images are sent by microwave links to the ground or or in the form of film contained in recoverable capsules.

Spy satellites by country

In fact the the United States of America were the first, in 1960, to set up a system of observation of the ground by satellite with an aim of observing the potential military threats.

The United States

  • Satellite American: Corona, Samos, Calved, Lacrosse/Onyx, Misty/Zirconic, Quasar, Vortex/Chalet, as well as the Keyhole series, detailed in table below

Thereafter of many countries their own satellites developed:

Facts

  • 2007 : The government agencies American publish on Internet the coordinates of the satellites of French information. In Burgundy, the Radar LOW REGISTERS of space monitoring makes it possible to chart the space engines, and thus to detect 30 satellites - unknown American spies hitherto. France threatens to reveal their coordinates if the United States does not cease this activity.

See too

Internal bond

  • Cosmos 954, Soviet spy satellite being crushed in Canada.

External bonds

  • Presentation and performances of the satellites spy

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