Concept and Performance of Internal Instrument Calibration for Multi-Channel SAR
Konferenz: EUSAR 2018 - 12th European Conference on Synthetic Aperture Radar
04.06.2018 - 07.06.2018 in Aachen, Germany
Tagungsband: EUSAR 2018
Seiten: 5Sprache: EnglischTyp: PDF
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Autoren:
Younis, Marwan; Laux, Christopher; Krieger, Gerhard (Microwaves and Radar Institute, German Aerospace Center (DLR), Germany)
Loinger, Andrea; Adamiuk, Grzegorz (Airbus Defense and Space GmbH, Space Systems, Germany)
Ludwig, Michael; Geudtner, Dirk (European Space Agency, ESA/ESTEC, The Netherlands)
Inhalt:
The increased complexity of multi-channel SAR sensors and the real-time on-board phase/amplitude correction requirement poses new challenges for the calibration, which cannot rely on current calibration techniques. On the other hand, the digital hardware utilized in multi-channel SAR systems, offer entirely new opportunities for the calibration such as on-board error correction and digital calibration. An internal calibration strategy for future digital beamforming SAR instruments is detailed and its performance analyzed using a dedicated calibration simulator software.