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Orientation Angle Estimation Over Forested Terrain Using P-band POLSAR Data

Sauer, Stefan and Jagdhuber, Thomas and Kugler, Florian and Lee, Seung-Kuk and Papathanassiou, Kostas (2012) Orientation Angle Estimation Over Forested Terrain Using P-band POLSAR Data. In: Proceedings of the 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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Abstract

One important secondary objective of the proposed Earth- Explorer Candidate Mission BIOMASS is the retrieval of a digital terrain model (DTM) using satellite-borne P-band SAR data. The interferometric phase acquired in repeat-pass mode may be affected by ionospheric effects leading to corrupted phase estimates and, consequently, to errors in the derived DTM. In contrast, line-of-sight orientation angles induced by azimuth slopes can be estimated using single-pass POLSAR measurements. The orientation angle estimates allow a necessary pre-processing of POLSAR observations and the retrieval of topographic information such as a DTM. In this study, the performance of the circular polarization method for orientation angle estimation is examined over forested areas. To this end, the orientation angles computed from P-band POLSAR data are compared with the results obtained from LIDAR DTMs. In particular, the estimation performance is investigated with respect to the impact of topography and vegetation. POLSAR data at P-band are used that have been acquired by the E-SAR system of DLR over three forested test sites: two boreal forests in Sweden (one over flat terrain located at Remningstorp, the other over terrain with topographic variations at Krycklan) and the tropical forest Mawas in Indonesia over flat terrain.

Document Type:Conference or Workshop Item (Speech)
Additional Information:©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:Orientation Angle Estimation Over Forested Terrain Using P-band POLSAR Data
Authors:
AuthorsInstitution or Email of Authors
Sauer, StefanUNSPECIFIED
Jagdhuber, ThomasUNSPECIFIED
Kugler, FlorianUNSPECIFIED
Lee, Seung-KukUNSPECIFIED
Papathanassiou, KostasUNSPECIFIED
Date:26 July 2012
Journal or Publication Title:Proceedings of the IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
Refereed publication:Yes
In ISI Web of Science:No
Page Range:pp. 1-4
Publisher:IEEE
Status:Published
Keywords:POLSAR orientation angle estimation, forested terrain, vegetation bias
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
Organizer:IEEE
HGF - Research field:Aeronautics, Space and Transport (old), Aeronautics, Space and Transport
HGF - Program:Space (old), Space
HGF - Program Themes:W EO - Erdbeobachtung, Earth Observation
DLR - Research area:Space, Raumfahrt
DLR - Program:W EO - Erdbeobachtung, R EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Flugzeug-SAR (old), R - Vorhaben Flugzeug-SAR
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Microwaves and Radar Institute
Deposited By: Stefan Sauer
Deposited On:02 Aug 2012 17:27
Last Modified:08 May 2014 23:23

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