X-Band Demonstrator for Receive-only Frontend with Digital Beamforming

Konferenz: EUSAR 2010 - 8th European Conference on Synthetic Aperture Radar
07.06.2010 - 10.06.2010 in Aachen, Germany

Tagungsband: EUSAR 2010

Seiten: 4Sprache: EnglischTyp: PDF

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Schaefer, Christoph; Heer, Christoph (Astrium GmbH, Germany)
Ludwig, Michael (ESA/ESTEC, The Netherlands)

A technology demonstration has shown feasibility of the scan-on-receive (SCORE) principle in X-band, required for future High-Resolution Wide-Swath (HRWS) SAR instruments. Under ESA contract, a hardware demonstrator has been designed, built and tested. The 5-channel demonstrator features homodyne downconversion, early digitization, and digital beamforming (DBF). Digital beamforming is performed in real-time and has successfully been demonstrated in the anechoic chamber. Achieved performances are reported, including receive chain noise figure, SNR beamforming gain and DC power consumption.