Gomba, Giorgio (2018) Estimation of Ionosphere-Compensated Azimuth Ground Motion with Sentinel-1. In: Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR. EUSAR 2018, 04.-07. Juni 2018, Aachen, Germany.
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Abstract
This paper deals with the mitigation of ionospheric effects in the estimation of azimuth ground motion using Sentinel-1 images. Thanks to the high accuracy of Sentinel-1 azimuth orbit timings, precise absolute measurements of azimuth ground displacements are possible, nevertheless, variations in the ionosphere electron content can introduce significant errors. Azimuth shifts are usually estimated with the Enhanced Spectral Diversity technique in the burst overlap areas. The ionospheric phase contribution can be estimated with the split-spectrum method. In this paper, the correction of ionospheric errors in azimuth shifts is realized by compensating the ionospheric phase in the burst overlap areas; this is only possible when considering the correct ionospheric height and the squint angles. The technique is thoroughly described in the paper. Experiments shows how this procedure can sensibly mitigate the ionospheric influence on azimuth shifts, improving the measurements of geophysical phenomena as, for example, earthquakes.
Item URL in elib: | https://elib.dlr.de/126662/ | ||||||
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Document Type: | Conference or Workshop Item (Speech) | ||||||
Title: | Estimation of Ionosphere-Compensated Azimuth Ground Motion with Sentinel-1 | ||||||
Authors: |
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Date: | 16 August 2018 | ||||||
Journal or Publication Title: | Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR | ||||||
Refereed publication: | Yes | ||||||
Open Access: | Yes | ||||||
In SCOPUS: | Yes | ||||||
In ISI Web of Science: | No | ||||||
Status: | Published | ||||||
Keywords: | ionosphere, insar, azimuth shifts | ||||||
Event Title: | EUSAR 2018 | ||||||
Event Location: | Aachen, Germany | ||||||
Event Type: | international Conference | ||||||
Event Dates: | 04.-07. Juni 2018 | ||||||
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 - Vorhaben Tandem-L Vorstudien (old) | ||||||
Location: | Oberpfaffenhofen | ||||||
Institutes and Institutions: | Remote Sensing Technology Institute > SAR Signal Processing | ||||||
Deposited By: | Gomba, Giorgio | ||||||
Deposited On: | 26 Feb 2019 12:32 | ||||||
Last Modified: | 31 Jul 2019 20:24 |
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