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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.
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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 | |||||||||||||||
| 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 - Erdbeobachtung | |||||||||||||||
| 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: | 31 Jul 2019 20:15 |
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