Younis, Marwan und Adamiuk, Grzegorz und Almeida, Felipe und Huber, Sigurd und Jäger, Marc und Loinger, Andrea und Martone, Michele und Rommel, Tobias und Krieger, Gerhard (2017) An Internal Calibration Approach of Multi-Channel SAR Sensors. ESA Advanced RF Sensors and Remote Sensing Instruments (ARSI), 2017-09-12 - 2017-09-14, Noordwijk, The Netherlands.
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Offizielle URL: http://esaconferencebureau.com/2017-events/17m18/
Kurzfassung
Calibration methods of state-of-the-art spaceborne SAR are reviewed to suggest calibration strategies for future SAR systems. These systems will utilize digital beamforming, which poses new challenges for the calibration, as the increased complexity of multi-channel SAR does not allow for the extrapolation of current calibration techniques. Further, real-time error measurement and correction is unavoidable, which requires reconsidering current calibration approaches. One the other hand, the digital hardware already present in multi-channel SAR systems, offer opportunities for the calibration such as on-board error correction and digital calibration. This paper presents a calibration scheme suitable for multi-channel digital beam-forming SAR. The main characteristics of the suggested calibration concept is, that, it avoids the typical interruption of SAR operation when injecting the calibration signal --which would cause lost imaging pulses or a reduction in swath--, and that it allows for on-board channel correction. Internal calibration concepts do not measure errors outside the calibration signal path, such as the antenna, which thus cannot be corrected. These deficiencies are overcome by using a data driven calibration, meaning that the channel errors are extracted from the (raw) receive SAR data.
elib-URL des Eintrags: | https://elib.dlr.de/113604/ | ||||||||||||||||||||||||||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||||||||||||||||||||||||||
Titel: | An Internal Calibration Approach of Multi-Channel SAR Sensors | ||||||||||||||||||||||||||||||||||||||||
Autoren: |
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Datum: | 12 September 2017 | ||||||||||||||||||||||||||||||||||||||||
Referierte Publikation: | Nein | ||||||||||||||||||||||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||||||||||||||
Stichwörter: | SAR Calibration, DBF Instrument Calibration | ||||||||||||||||||||||||||||||||||||||||
Veranstaltungstitel: | ESA Advanced RF Sensors and Remote Sensing Instruments (ARSI) | ||||||||||||||||||||||||||||||||||||||||
Veranstaltungsort: | Noordwijk, The Netherlands | ||||||||||||||||||||||||||||||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||||||||||||||||||||||||||||||
Veranstaltungsbeginn: | 12 September 2017 | ||||||||||||||||||||||||||||||||||||||||
Veranstaltungsende: | 14 September 2017 | ||||||||||||||||||||||||||||||||||||||||
Veranstalter : | ESA | ||||||||||||||||||||||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||||||||||||||||||
HGF - Programm: | Raumfahrt | ||||||||||||||||||||||||||||||||||||||||
HGF - Programmthema: | Erdbeobachtung | ||||||||||||||||||||||||||||||||||||||||
DLR - Schwerpunkt: | Raumfahrt | ||||||||||||||||||||||||||||||||||||||||
DLR - Forschungsgebiet: | R EO - Erdbeobachtung | ||||||||||||||||||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | R - Entwicklung eines Mini-SAR | ||||||||||||||||||||||||||||||||||||||||
Standort: | Oberpfaffenhofen | ||||||||||||||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Hochfrequenztechnik und Radarsysteme > Radarkonzepte | ||||||||||||||||||||||||||||||||||||||||
Hinterlegt von: | Younis, Dr.-Ing. Marwan | ||||||||||||||||||||||||||||||||||||||||
Hinterlegt am: | 08 Aug 2017 13:47 | ||||||||||||||||||||||||||||||||||||||||
Letzte Änderung: | 24 Apr 2024 20:18 |
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