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  • Radar MASINT — is one of the subdisciplines of Measurement and Signature Intelligence (MASINT) and refers to intelligence gathering activities that bring together disparate elements that do not fit within the definitions of Signals Intelligence (SIGINT),… …   Wikipedia

  • radar — /ray dahr/, n. 1. Electronics. a device for determining the presence and location of an object by measuring the time for the echo of a radio wave to return from it and the direction from which it returns. 2. a means or sense of awareness or… …   Universalium

  • Radar — For other uses, see Radar (disambiguation). A long range radar antenna, known as ALTAIR, used to detect and track space objects in conjunction with ABM testing at the Ronald Reagan Test Site on Kwajalein Atoll …   Wikipedia

  • Search for extraterrestrial intelligence — The search for extraterrestrial intelligence is sometimes abbreviated as SETI. For other uses, see SETI (disambiguation). Screen shot of the screensaver for SETI@home, a distributed computing project in which volunteers donate idle computer power …   Wikipedia

  • Search and rescue — For other uses, see Search and rescue (disambiguation) Search and rescue A Canadian Forces CH 149 Cormorant helicopter hoists a man from a Canadian Coast Guard cutter Search and rescue (SAR) is the search for and provision of aid to people who… …   Wikipedia

  • Types and uses of radar — Radar has many different types and applications: * Search radars scan a wide area with pulses of short radio waves. They usually scan the area two to four times a minute. The waves are usually less than a meter long. Ships and planes are metal,… …   Wikipedia

  • Weather radar — in Norman, Oklahoma with rainshaft …   Wikipedia

  • Lunar water — Composite image of the Moon s south polar region, captured by NASA s Clementine probe over two lunar days. Permanently shadowed areas could harbour water ice. Lunar water is water that is present on the Moon. Liquid water cannot persist at the… …   Wikipedia

  • History of radar — The history of radar starts with experiments by Heinrich Hertz in the late 19th century that showed that radio waves were reflected by metallic objects. This possibility was suggested in James Clerk Maxwell s seminal work on electromagnetism.… …   Wikipedia

  • Fire-control radar — A fire control radar is a radar which is designed specifically to provide information (mainly target azimuth, elevation, range and velocity) to a fire control system in order to calculate a firing solution (i.e. information on how to direct… …   Wikipedia

  • SCR-270 radar — and was deployed around the world. It is also known as the Pearl Harbor Radar, as it was a SCR 270 set that saw the incoming raid about half an hour before the attack commenced.Two versions were produced, the mobile SCR 270, and the fixed SCR 271 …   Wikipedia

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