Younis, Marwan und Sakar, Nida und Rodriguez Cassola, Marc und Prats, Pau und Zonno, Mariantonietta und Krieger, Gerhard und Moreira, Alberto (2024) Overlapping Azimuth Channels for SAR Imaging --- Revisited. In: Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR. European Conference on Synthetic Aperture Radar (EUSAR), 2024-04-23 - 2024-04-26, Munich, Germany.
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Offizielle URL: https://www.eusar.de
Kurzfassung
Digital beamforming in combination with multiple azimuth channels (MACs) enable high azimuth resolution Synthetic Aperture Radar (SAR). In terms of the SAR trade space this comes at the expense of restricting the instrument Pulse Repetition Frequency (PRF) operation to values close to the uniform PRF values, determined by the ratio of total antenna length to platform velocity, or otherwise sacrificing, i.e., increasing the signal-to-noise ratio (SNR) or azimuth-ambiguity-to-signal ration (AASR). An approach, which has been investigated earlier, to change (increase) the uniform PRF while keeping the antenna length constant is to use overlapping azimuth channels. Here the analog RF output of individual azimuth antenna elements are assigned to two (or even more) digital channels. In this paper the impact of utilizing overlapping azimuth channels on the SAR instrument and performance parameters is analyzed. The aim is to establish a thorough understanding of the SAR trade space. A rigorous methodology is followed in developing close form expressions to describe the relevant performance parameters.
elib-URL des Eintrags: | https://elib.dlr.de/201709/ | ||||||||||||||||||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||||||||||||||||||
Titel: | Overlapping Azimuth Channels for SAR Imaging --- Revisited | ||||||||||||||||||||||||||||||||
Autoren: |
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Datum: | April 2024 | ||||||||||||||||||||||||||||||||
Erschienen in: | Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR | ||||||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||||||||||||||
Status: | akzeptierter Beitrag | ||||||||||||||||||||||||||||||||
Stichwörter: | SAR, azimuth reconstruction, MACs, multiple azimuth channels, overlapping azimuth channels | ||||||||||||||||||||||||||||||||
Veranstaltungstitel: | European Conference on Synthetic Aperture Radar (EUSAR) | ||||||||||||||||||||||||||||||||
Veranstaltungsort: | Munich, Germany | ||||||||||||||||||||||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||||||||||||||||||||||
Veranstaltungsbeginn: | 23 April 2024 | ||||||||||||||||||||||||||||||||
Veranstaltungsende: | 26 April 2024 | ||||||||||||||||||||||||||||||||
Veranstalter : | VDE | ||||||||||||||||||||||||||||||||
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 Jan 2024 10:15 | ||||||||||||||||||||||||||||||||
Letzte Änderung: | 24 Apr 2024 21:02 |
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