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Reference Target Correction Based on Point Target SAR Simulation

Döring, Björn J. und Looser, Philipp und Jirousek, Matthias und Schwerdt, Marco (2012) Reference Target Correction Based on Point Target SAR Simulation. IEEE Transactions on Geoscience and Remote Sensing, 50 (3), Seiten 951-959. IEEE. DOI: 10.1109/TGRS.2011.2162590.

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Kurzfassung

The backscattering from man-made point targets like passive corner reflectors and active transponders is often used as a radiometric calibration standard for synthetic aperture radar (SAR) calibration. As new systems emerge and the demand for more accurate systems increases, it becomes necessary to better understand the effects of real or imperfect targets on the radiometric calibration results. Therefore, a point target SAR simulator is presented which models the complete external radiometric calibration process. It incorporates a number of target properties like frequency response, transponder internal calibration strategies, noise, and interference signals, and it takes the instrument SAR mode settings into consideration. Thereby, the relevant target backscatter variation as observed in the processed SAR image with respect to an ideal or any other target can be determined. The simulation results are relevant during the design process of a new target as well as during the actual calibration of a SAR system. Based on these point target simulations, correction coefficients can be stated for each target and SAR mode, therefore decreasing the remaining radiometric point target uncertainties. The quantitative examples in this paper show that these corrections can influence the absolute radiometric calibration by more than 1 dB.

Dokumentart:Zeitschriftenbeitrag
Zusätzliche Informationen:(c) 2011 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Titel:Reference Target Correction Based on Point Target SAR Simulation
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Döring, Björn J.NICHT SPEZIFIZIERT
Looser, PhilippNICHT SPEZIFIZIERT
Jirousek, MatthiasNICHT SPEZIFIZIERT
Schwerdt, MarcoNICHT SPEZIFIZIERT
Datum:März 2012
Erschienen in:IEEE Transactions on Geoscience and Remote Sensing
Referierte Publikation:Ja
In Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:50
DOI :10.1109/TGRS.2011.2162590
Seitenbereich:Seiten 951-959
Verlag:IEEE
Status:veröffentlicht
Stichwörter:SAR calibration; point targets
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W EO - Erdbeobachtung
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):W - Projekt TerraSAR-X Kalibration und Projektunterstützung (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Hochfrequenztechnik und Radarsysteme > Satelliten-SAR-Systeme
Hinterlegt von: Björn Döring
Hinterlegt am:15 Dez 2011 10:41
Letzte Änderung:12 Dez 2013 21:29

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