Makhoul, Eduardo und Broquetas, Antoni und López-Dekker, Paco und Closa, Josep und Saameno, Paula (2012) Evaluation of the Internal Calibration Methodologies for Spaceborne Synthetic Aperture Radars with Active Phased Array Antennas. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 5 (3), Seiten 909-918. IEEE - Institute of Electrical and Electronics Engineers. doi: 10.1109/JSTARS.2012.2199087. ISSN 1939-1404.
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Kurzfassung
This paper presents a novel approach in the instrumental error analysis of Synthetic Aperture Radars (SAR) based on active phased array antennas (APAA). A residual post-calibration error exists due to differences between the calibration and operational excitations of the transmit/receive modules (TRMs) for those source errors that are monitored by the internal calibration facility. Analytical expressions are derived for the residual post-calibration errors and validated through intensive simulations of some instrumental errors for a specific sensor architecture. Alternative internal global calibration strategies are proposed to reduce the impact of the post-calibration error. The simulations show that the proposed elevation dependent calibration can provide a substantial reduction of the post-calibration errors even in the case of relaxed tolerance of the TRM weight setting errors.
elib-URL des Eintrags: | https://elib.dlr.de/76245/ | ||||||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||||||
Titel: | Evaluation of the Internal Calibration Methodologies for Spaceborne Synthetic Aperture Radars with Active Phased Array Antennas | ||||||||||||||||||||||||
Autoren: |
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Datum: | 1 Juni 2012 | ||||||||||||||||||||||||
Erschienen in: | IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing | ||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||||||
Band: | 5 | ||||||||||||||||||||||||
DOI: | 10.1109/JSTARS.2012.2199087 | ||||||||||||||||||||||||
Seitenbereich: | Seiten 909-918 | ||||||||||||||||||||||||
Verlag: | IEEE - Institute of Electrical and Electronics Engineers | ||||||||||||||||||||||||
ISSN: | 1939-1404 | ||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||
Stichwörter: | Arrays , Calibration , Gain , Phased arrays , Radar antennas , Spaceborne radar, Synthetic aperture radar (SAR) , active phased array antenna (APAA) , internal calibration , transmit/receive modules (TRMs) | ||||||||||||||||||||||||
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 - SAR-Expert-Support-Lab | ||||||||||||||||||||||||
Standort: | Oberpfaffenhofen | ||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Hochfrequenztechnik und Radarsysteme > Radarkonzepte | ||||||||||||||||||||||||
Hinterlegt von: | Lopez Dekker, Paco | ||||||||||||||||||||||||
Hinterlegt am: | 09 Jul 2012 09:46 | ||||||||||||||||||||||||
Letzte Änderung: | 19 Nov 2021 20:28 |
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