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Optimal estimation of distributed scatterer phase history parameters from meter-resolution SAR data

Wang, Yuanyuan und Zhu, Xiao Xiang und Bamler, Richard (2011) Optimal estimation of distributed scatterer phase history parameters from meter-resolution SAR data. IEEE. IGARSS 2011, 24-29 July 2011, Vancouver, Canada. ISBN 978-1-4577-1003-2 . ISSN 2153-6996

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Offizielle URL: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6049967

Kurzfassung

Measuring the long-term line-of-sight deformation using a multi-pass SAR data stack by standard persistent scatterer technique has been explored since the late 1990s. Researches have been continuously conducted on increasing the data coverage at non-PS-rich areas. The recently developed SqueeSARTM technique has validated the potential of extracting useful information from distributed scatterers. With the availability of high resolution TerraSAR-X spotlight data, this technique can benefit greatly from its higher data density and quality. This article presents an algorithm of parameter estimation at distributed scatterers by maximum likelihood estimator in high resolution TS-X spotlight data. Different to SqueeSAR, this article pays particular attention to the accurate covariance matrix estimation for phase history retrieval on each individual distributed scatterer. Solutions are presented for adaptive sample selection by a different statistical test (Anderson-Darling). An adaptive multi-resolution defringe algorithm is introduced to cope with the problem of accurate fringe removal and in turn accurate covariance matrix estimation. And finally maximum likelihood estimator was employed to estimate the model parameters by weighting each measurement according to its coherence. By combining both the persistent scatterers and distributed scatterers, the increase in the capable monitoring area is phenomenal.

Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Optimal estimation of distributed scatterer phase history parameters from meter-resolution SAR data
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Wang, YuanyuanTUM
Zhu, Xiao XiangTUM,DLR
Bamler, RichardTUM,DLR
Datum:24 Juli 2011
Referierte Publikation:Nein
In ISI Web of Science:Nein
Seitenbereich:Seiten 3468-3471
Verlag:IEEE
ISSN:2153-6996
ISBN:978-1-4577-1003-2
Status:veröffentlicht
Stichwörter:Interferometric SAR, distributed scatterers, covariance matrix, phase history
Veranstaltungstitel:IGARSS 2011
Veranstaltungsort:Vancouver, Canada
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:24-29 July 2011
Veranstalter :IEEE
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 hochauflösende Fernerkundungsverfahren
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Methodik der Fernerkundung > SAR-Signalverarbeitung
Hinterlegt von: Yuanyuan Wang
Hinterlegt am:19 Aug 2011 09:56
Letzte Änderung:08 Mai 2014 23:22

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