Martone, Michele und Gollin, Nicola und Rizzoli, Paola und Villano, Michelangelo und Younis, Marwan und Krieger, Gerhard (2019) Advances in Onboard Data Reduction Methods for Next-Generation Synthetic Aperture Radar Systems. In: 20th International Radar Symposium, IRS 2019. International Radar Symposium (IRS), 2019-06-26 - 2019-06-28, Ulm, Germany. doi: 10.23919/IRS.2019.8768153.
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Kurzfassung
For present and future spaceborne synthetic aperture radar (SAR) missions, an increasing volume of onboard data is going to be required, due to the employment of large bandwidths, multiple polarizations, and large swath widths, which lead to hard requirements in terms of onboard memory and downlink capacity. This paper presents novel methods for data volume reduction in the context of multi-azimuth channel (MAC) SAR and staggered SAR, which allow for high-resolution imaging of a wide swath by means of different system architectures. In particular, for such systems, a pulse repetition frequency (PRF) typically higher than the processed Doppler bandwidth is selected. The resulting oversampling and correlation properties of the azimuth SAR raw signal can be exploited by applying an efficient encoding and quantization of the SAR raw data in order to reduce the onboard volume of data. Simulation results show that the proposed methods allow for a significant reduction of the data volume to be downlinked to the ground at the cost of a modest increase of onboard computational effort.
elib-URL des Eintrags: | https://elib.dlr.de/126687/ | ||||||||||||||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||||||||||||||
Titel: | Advances in Onboard Data Reduction Methods for Next-Generation Synthetic Aperture Radar Systems | ||||||||||||||||||||||||||||
Autoren: |
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Datum: | 2019 | ||||||||||||||||||||||||||||
Erschienen in: | 20th International Radar Symposium, IRS 2019 | ||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||||||||||
DOI: | 10.23919/IRS.2019.8768153 | ||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||
Stichwörter: | Multi-Channel Synthetic Aperture Radar (SAR), Staggered SAR, Data Reduction, Quantization | ||||||||||||||||||||||||||||
Veranstaltungstitel: | International Radar Symposium (IRS) | ||||||||||||||||||||||||||||
Veranstaltungsort: | Ulm, Germany | ||||||||||||||||||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||||||||||||||||||
Veranstaltungsbeginn: | 26 Juni 2019 | ||||||||||||||||||||||||||||
Veranstaltungsende: | 28 Juni 2019 | ||||||||||||||||||||||||||||
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 - Vorhaben Tandem-L Vorstudien (alt) | ||||||||||||||||||||||||||||
Standort: | Oberpfaffenhofen | ||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Hochfrequenztechnik und Radarsysteme > Satelliten-SAR-Systeme Institut für Hochfrequenztechnik und Radarsysteme > Radarkonzepte | ||||||||||||||||||||||||||||
Hinterlegt von: | Martone, Michele | ||||||||||||||||||||||||||||
Hinterlegt am: | 04 Mär 2019 10:25 | ||||||||||||||||||||||||||||
Letzte Änderung: | 24 Apr 2024 20:30 |
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