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Spaceborne radars with electronically scanned antennas are in use on European satellites since the launch of Envisat in March 2002. Despite the higher complexity and consequently cost, electronically scanned antennas are more and more attractive for spaceborne radar. The return materialises either in significantly better system performance or in newly gained system feasibility. The paper will discuss...
Future SAR instruments such as the high resolution wide swath (HRWS) SAR incorporate digital beamforming techniques to overcome fundamental limitations of conventional SAR and to offer advanced modes defined by software. The European and German Space Agencies ESA and DLR are currently conducting interlinked studies of critical Digital Beamforming SAR antenna items, including several breadboarding...
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