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Phase Calibration of Multibaseline SAR Data Based on a Minimum Entropy Criterion

Pardini, Matteo and Bianco, Vittorio and Papathanassiou, Konstantinos and Iodice, Antonio (2012) Phase Calibration of Multibaseline SAR Data Based on a Minimum Entropy Criterion. In: Proceedings of IEEE international Geoscience and Remote Sensing Symposium (IGARSS), pp. 1-4. IEEE. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2012-07-22 - 2012-07-27, Munich, Germany.

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Prior to any processing of multibaseline (MB) synthetic aperture radar (SAR) data stacks, a MB phase calibration is necessary to compensate for phase contributions due to non-compensated platform motions and/or atmospheric propagation delays. Classical calibration methods rely on the detection of point-like scatterers. However, especially in natural scenarios, their final calibration performance could be impaired by the nature of the scattering and by the typical low number of baselines. In this paper, we propose a calibration method based on the minimization of the entropy of the vertical profile of the backscattered power. This allows to potentially exploit the MB SAR signal independently of the nature of the scattering. The proposed method has been tested by processing simulated and real airborne datasets of a forest stand.

Document Type:Conference or Workshop Item (Speech)
Additional Information:Copyright:(c) 2012 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.
Title:Phase Calibration of Multibaseline SAR Data Based on a Minimum Entropy Criterion
AuthorsInstitution or Email of Authors
Pardini, MatteoUNSPECIFIED
Bianco, VittorioUniversity of Naples "Federico II"
Papathanassiou, KonstantinosUNSPECIFIED
Iodice, AntonioUniversity of Naples "Federico II"
Date:26 July 2012
Journal or Publication Title:Proceedings of IEEE international Geoscience and Remote Sensing Symposium (IGARSS)
Refereed publication:Yes
In ISI Web of Science:No
Page Range:pp. 1-4
Keywords:Synthetic aperture radar, tomography, calibration, entropy minimization, adaptive beamforming
Event Title:IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
Event Location:Munich, Germany
Event Type:international Conference
Event Dates:2012-07-22 - 2012-07-27
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Tandem-L Vorstudien (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Deposited By: Dr.-Ing. Matteo Pardini
Deposited On:06 Jun 2012 11:07
Last Modified:08 May 2014 23:23

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