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Schmidt, Kersten and Tous Ramon, Núria and Reimann, Jens and Schwerdt, Marco (2018) Verifying the Geometric Accuracy of Sentinel-1A and Sentinel-1B Using L0- Products. In: 2014 8th European Conference on Antennas and Propagation (EuCAP). European Conference on Antennas and Propagation (EuCAP), 2018-04-09 - 2018-04-13, London, United Kingdom. doi: 10.1049/cp.2018.0740.
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Abstract
The geometric accuracy of Sentinel-1 is usally derived from level-1 products in Stripmap mode using accurate surveyed corner reflector positions. While the range offset is found to be low (~30 cm) an azimuth offset of about 2 m remains. The study investigates the reason for the geometric offsets by deriving the geometric parameters from L0-data. Therefore the pulse round-trip time is analyzed from transmission to reception of a point target's backscatter including a simple pulse compression in range and azimuth. Finally, the azimuth offset is reduced to about 15 cm which indicates an artificial bias arising from SAR processing.
| Item URL in elib: | https://elib.dlr.de/117950/ | ||||||||||||||||||||
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| Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||||
| Title: | Verifying the Geometric Accuracy of Sentinel-1A and Sentinel-1B Using L0- Products | ||||||||||||||||||||
| Authors: |
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| Date: | 2018 | ||||||||||||||||||||
| Journal or Publication Title: | 2014 8th European Conference on Antennas and Propagation (EuCAP) | ||||||||||||||||||||
| Refereed publication: | Yes | ||||||||||||||||||||
| Open Access: | Yes | ||||||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||||||
| In SCOPUS: | No | ||||||||||||||||||||
| In ISI Web of Science: | Yes | ||||||||||||||||||||
| DOI: | 10.1049/cp.2018.0740 | ||||||||||||||||||||
| Status: | Published | ||||||||||||||||||||
| Keywords: | Sentinel-1, Geometric Calibration, Point targets | ||||||||||||||||||||
| Event Title: | European Conference on Antennas and Propagation (EuCAP) | ||||||||||||||||||||
| Event Location: | London, United Kingdom | ||||||||||||||||||||
| Event Type: | international Conference | ||||||||||||||||||||
| Event Dates: | 2018-04-09 - 2018-04-13 | ||||||||||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||
| HGF - Program: | Space | ||||||||||||||||||||
| HGF - Program Themes: | Earth Observation | ||||||||||||||||||||
| DLR - Research area: | Raumfahrt | ||||||||||||||||||||
| DLR - Program: | R EO - Earth Observation | ||||||||||||||||||||
| DLR - Research theme (Project): | R - SAR missions | ||||||||||||||||||||
| Location: | Oberpfaffenhofen | ||||||||||||||||||||
| Institutes and Institutions: | Microwaves and Radar Institute > Spaceborne SAR Systems | ||||||||||||||||||||
| Deposited By: | Schmidt, Dr. Kersten | ||||||||||||||||||||
| Deposited On: | 08 Jan 2018 12:16 | ||||||||||||||||||||
| Last Modified: | 24 Jul 2023 15:33 |
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