Schulz-Stellenfleth, Johannes und Lehner, Susanne und Hoja, Danielle und Nieto-Borge, Jose Carlos (2004) Ocean Wave Measurements from Envisat ASAR data Using a Parametric Inversion Scheme. In: Proceedings of OMAE2004, 51584-1-51584-4. OMAE 2004, Vancouver, Canada, 20-25 June 2004. ISBN 0-7918-3672-X.
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Kurzfassung
A parametric algorithm is presented to estimate twodimensional ocean wave spectra from ENVISAT ASAR wave mode data on a global scale. The retrieval scheme makes use of prior information taken from numerical wave models. The Partition Rescale and Shift algorithm (PARSA) is based on a partitioning technique, which splits an a priori wave spectrum into its wave system components. Integral parameters of these systems, such as mean direction, mean wavelength, waveheight, and directional spreading are then adjusted iteratively to improve the consistency with the SAR observation. The method takes into account the full nonlinear SAR imaging process and uses a maximum a posteriori approach, which is based on statistical model quantifying the errors of the SAR imaging model, the SAR measurement, and the prior wave spectra. The method is applied to a global data set of ENVISAT ASAR data acquired during the CAL/VAL phase. The benefit of cross spectra compared to conventional symmetric image spectra is demonstrated.
elib-URL des Eintrags: | https://elib.dlr.de/8267/ | ||||||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Paper) | ||||||||||||||||||||
Zusätzliche Informationen: | LIDO-Berichtsjahr=2004, | ||||||||||||||||||||
Titel: | Ocean Wave Measurements from Envisat ASAR data Using a Parametric Inversion Scheme | ||||||||||||||||||||
Autoren: |
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Datum: | 2004 | ||||||||||||||||||||
Erschienen in: | Proceedings of OMAE2004 | ||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||
Seitenbereich: | 51584-1-51584-4 | ||||||||||||||||||||
Herausgeber: |
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ISBN: | 0-7918-3672-X | ||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||
Stichwörter: | SAR, ocean wave spectrum, spectral parameters | ||||||||||||||||||||
Veranstaltungstitel: | OMAE 2004, Vancouver, Canada, 20-25 June 2004 | ||||||||||||||||||||
Veranstalter : | ASME | ||||||||||||||||||||
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): | NICHT SPEZIFIZIERT | ||||||||||||||||||||
Standort: | Oberpfaffenhofen | ||||||||||||||||||||
Institute & Einrichtungen: | Institut für Methodik der Fernerkundung | ||||||||||||||||||||
Hinterlegt von: | UNGÜLTIGER BENUTZER | ||||||||||||||||||||
Hinterlegt am: | 07 Feb 2006 | ||||||||||||||||||||
Letzte Änderung: | 06 Jan 2010 22:34 |
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