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The AdvancedSynthetic Aperture Radar System-2 (ASARS-2) is the radar system mounted on some variants of theLockheed U-2 reconnaissance aircraft.
The ASARS-2 radar was originally developed in the early 1980s byHughes Aircraft, which was acquired byRaytheon in the late 1990s. It is capable of detecting and accurately locating both stationary and moving ground targets; target information is transmitted via awidebanddata link to a ground station. The radar is capable of producing extremelyhigh resolution images at long range.
ASARS-2 was used extensively duringOperation Desert Storm for target location and battle damage assessment. It has also been used to survey damage after various domestic disasters, includingfloods along theMississippi River and the1994 Northridge earthquake.
In the late 1990s, the ASARS Improvement Program (AIP) incorporated several performance and supportability enhancements into the system. Making extensive use ofcommercial off-the-shelf technology, the AIP redesign increased on-board processing capability and upgraded the data link. The first of theseASARS-2A radars was delivered in 2001.[1]
Some features and technologies from the ASARS-2A system have been incorporated into theRaytheon Sentinel developed as theRAF's Airborne STand-Off Radar (ASTOR) aircraft.
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