A quality model of open-source Sentinel-1 SAR data by temporal and spatial modelling

Research output: Contribution to conferenceSlides to presentationResearch

Authors

Research Organisations

External Research Organisations

  • Clausthal University of Technology
View graph of relations

Details

Original languageEnglish
Publication statusPublished - 9 Mar 2023
EventGeoMonitoring 2023 - Leibniz University Hannover, Hannover, Germany
Duration: 9 Mar 202310 Mar 2023
https://www.geo-monitoring.org/de/tagungen/2023

Conference

ConferenceGeoMonitoring 2023
Country/TerritoryGermany
CityHannover
Period9 Mar 202310 Mar 2023
Internet address

Abstract

Large-scale deformation monitoring of civil infrastructures such as buildings, bridges, and railways or natural objects in a long-term, low-cost (or freely available), accurate, and reliable manner is still challenging. In this study, the Persistent Scatterer Interferometry (PSI) technique is applied using open-source synthetic aperture radar (SAR) data from C-band of satellite Sentinel-1. The quality assurance of the Persistent Scatterer (PS) data points is performed prior to deformation monitoring to judge the significance of deformations. Therefore, a general multi step procedure is developed and implemented which enables performing quality check of the PS data points by temporal and spatial modelling.

For this purpose, first, the PS data points are classified into buildings and ground types using LoD2 building models. Second, temporal modelling is carried out by time series analysis of the discrete PS points to estimate the offset, the deformation rate, and standard deviation for each PS point time series. Third, spatial modelling is performed based on the Multilevel B-Splines Approximation (MBA) for local geometric patches of the PS points. Having a continues surface enables the user to make predictions at any arbitrary position. Fourth, a data adaptive outlier detection algorithm is applied to identify and reject the outliers. The spatially-based outlier detection is beneficial compared to temporal one due to globally testing the deviations of the PS points to the model. Fifth, a 95% confidence interval is estimated for the approximated surface in the local geometric patches based on a bootstrapping approach. Subsequently, an appropriate quality model of the PS data is obtained by above-mentioned five steps temporal and spatial modellings.

A deformation analysis is carried out for areas of interest in the state of Lower Saxony, Germany. In this study, the PS data points are extracted from freely available online platform of the BodenBewegungsdienst Deutschland (Ground Motion Service Germany) provided by the Federal Institute for Geosciences and Natural Resources (BGR), Germany. For the purpose of validation, a time series of leveling and Global Navigation Satellite System (GNSS) measurements in the area of Hengstlage, Germany, are considered, which provided by Landesamt für Geoinformation und Landesvermessung Niedersachsen (LGLN). In the end, the results of the deformation analysis are compared with the results obtained from the BGR. The outcomes of this study can be used to track earth surface displacements in time. This information could be helpful in understanding natural hazard processes such as landslides, earthquakes, and floods, and to improve the safety and resilience of communities and infrastructure.

Cite this

A quality model of open-source Sentinel-1 SAR data by temporal and spatial modelling. / Omidalizarandi, Mohammad; Mohammadivojdan, Bahareh (Contributor); Alkhatib, Hamza (Contributor) et al.
2023. GeoMonitoring 2023, Hannover, Lower Saxony, Germany.

Research output: Contribution to conferenceSlides to presentationResearch

Omidalizarandi, M, Mohammadivojdan, B, Alkhatib, H, Paffenholz, J-A & Neumann, I 2023, 'A quality model of open-source Sentinel-1 SAR data by temporal and spatial modelling', GeoMonitoring 2023, Hannover, Germany, 9 Mar 2023 - 10 Mar 2023.
Omidalizarandi, M., Mohammadivojdan, B., Alkhatib, H., Paffenholz, J.-A., & Neumann, I. (2023). A quality model of open-source Sentinel-1 SAR data by temporal and spatial modelling. GeoMonitoring 2023, Hannover, Lower Saxony, Germany.
Omidalizarandi M, Mohammadivojdan B, Alkhatib H, Paffenholz JA, Neumann I. A quality model of open-source Sentinel-1 SAR data by temporal and spatial modelling. 2023. GeoMonitoring 2023, Hannover, Lower Saxony, Germany.
Omidalizarandi, Mohammad ; Mohammadivojdan, Bahareh ; Alkhatib, Hamza et al. / A quality model of open-source Sentinel-1 SAR data by temporal and spatial modelling. GeoMonitoring 2023, Hannover, Lower Saxony, Germany.
Download
@conference{1ddcf53481394f13997a50727f3be7cc,
title = "A quality model of open-source Sentinel-1 SAR data by temporal and spatial modelling",
abstract = "Large-scale deformation monitoring of civil infrastructures such as buildings, bridges, and railways or natural objects in a long-term, low-cost (or freely available), accurate, and reliable manner is still challenging. In this study, the Persistent Scatterer Interferometry (PSI) technique is applied using open-source synthetic aperture radar (SAR) data from C-band of satellite Sentinel-1. The quality assurance of the Persistent Scatterer (PS) data points is performed prior to deformation monitoring to judge the significance of deformations. Therefore, a general multi step procedure is developed and implemented which enables performing quality check of the PS data points by temporal and spatial modelling.For this purpose, first, the PS data points are classified into buildings and ground types using LoD2 building models. Second, temporal modelling is carried out by time series analysis of the discrete PS points to estimate the offset, the deformation rate, and standard deviation for each PS point time series. Third, spatial modelling is performed based on the Multilevel B-Splines Approximation (MBA) for local geometric patches of the PS points. Having a continues surface enables the user to make predictions at any arbitrary position. Fourth, a data adaptive outlier detection algorithm is applied to identify and reject the outliers. The spatially-based outlier detection is beneficial compared to temporal one due to globally testing the deviations of the PS points to the model. Fifth, a 95% confidence interval is estimated for the approximated surface in the local geometric patches based on a bootstrapping approach. Subsequently, an appropriate quality model of the PS data is obtained by above-mentioned five steps temporal and spatial modellings.A deformation analysis is carried out for areas of interest in the state of Lower Saxony, Germany. In this study, the PS data points are extracted from freely available online platform of the BodenBewegungsdienst Deutschland (Ground Motion Service Germany) provided by the Federal Institute for Geosciences and Natural Resources (BGR), Germany. For the purpose of validation, a time series of leveling and Global Navigation Satellite System (GNSS) measurements in the area of Hengstlage, Germany, are considered, which provided by Landesamt f{\"u}r Geoinformation und Landesvermessung Niedersachsen (LGLN). In the end, the results of the deformation analysis are compared with the results obtained from the BGR. The outcomes of this study can be used to track earth surface displacements in time. This information could be helpful in understanding natural hazard processes such as landslides, earthquakes, and floods, and to improve the safety and resilience of communities and infrastructure.",
author = "Mohammad Omidalizarandi and Bahareh Mohammadivojdan and Hamza Alkhatib and Jens-Andr{\'e} Paffenholz and Ingo Neumann",
year = "2023",
month = mar,
day = "9",
language = "English",
note = "GeoMonitoring 2023 ; Conference date: 09-03-2023 Through 10-03-2023",
url = "https://www.geo-monitoring.org/de/tagungen/2023",

}

Download

TY - CONF

T1 - A quality model of open-source Sentinel-1 SAR data by temporal and spatial modelling

AU - Omidalizarandi, Mohammad

A2 - Mohammadivojdan, Bahareh

A2 - Alkhatib, Hamza

A2 - Paffenholz, Jens-André

A2 - Neumann, Ingo

PY - 2023/3/9

Y1 - 2023/3/9

N2 - Large-scale deformation monitoring of civil infrastructures such as buildings, bridges, and railways or natural objects in a long-term, low-cost (or freely available), accurate, and reliable manner is still challenging. In this study, the Persistent Scatterer Interferometry (PSI) technique is applied using open-source synthetic aperture radar (SAR) data from C-band of satellite Sentinel-1. The quality assurance of the Persistent Scatterer (PS) data points is performed prior to deformation monitoring to judge the significance of deformations. Therefore, a general multi step procedure is developed and implemented which enables performing quality check of the PS data points by temporal and spatial modelling.For this purpose, first, the PS data points are classified into buildings and ground types using LoD2 building models. Second, temporal modelling is carried out by time series analysis of the discrete PS points to estimate the offset, the deformation rate, and standard deviation for each PS point time series. Third, spatial modelling is performed based on the Multilevel B-Splines Approximation (MBA) for local geometric patches of the PS points. Having a continues surface enables the user to make predictions at any arbitrary position. Fourth, a data adaptive outlier detection algorithm is applied to identify and reject the outliers. The spatially-based outlier detection is beneficial compared to temporal one due to globally testing the deviations of the PS points to the model. Fifth, a 95% confidence interval is estimated for the approximated surface in the local geometric patches based on a bootstrapping approach. Subsequently, an appropriate quality model of the PS data is obtained by above-mentioned five steps temporal and spatial modellings.A deformation analysis is carried out for areas of interest in the state of Lower Saxony, Germany. In this study, the PS data points are extracted from freely available online platform of the BodenBewegungsdienst Deutschland (Ground Motion Service Germany) provided by the Federal Institute for Geosciences and Natural Resources (BGR), Germany. For the purpose of validation, a time series of leveling and Global Navigation Satellite System (GNSS) measurements in the area of Hengstlage, Germany, are considered, which provided by Landesamt für Geoinformation und Landesvermessung Niedersachsen (LGLN). In the end, the results of the deformation analysis are compared with the results obtained from the BGR. The outcomes of this study can be used to track earth surface displacements in time. This information could be helpful in understanding natural hazard processes such as landslides, earthquakes, and floods, and to improve the safety and resilience of communities and infrastructure.

AB - Large-scale deformation monitoring of civil infrastructures such as buildings, bridges, and railways or natural objects in a long-term, low-cost (or freely available), accurate, and reliable manner is still challenging. In this study, the Persistent Scatterer Interferometry (PSI) technique is applied using open-source synthetic aperture radar (SAR) data from C-band of satellite Sentinel-1. The quality assurance of the Persistent Scatterer (PS) data points is performed prior to deformation monitoring to judge the significance of deformations. Therefore, a general multi step procedure is developed and implemented which enables performing quality check of the PS data points by temporal and spatial modelling.For this purpose, first, the PS data points are classified into buildings and ground types using LoD2 building models. Second, temporal modelling is carried out by time series analysis of the discrete PS points to estimate the offset, the deformation rate, and standard deviation for each PS point time series. Third, spatial modelling is performed based on the Multilevel B-Splines Approximation (MBA) for local geometric patches of the PS points. Having a continues surface enables the user to make predictions at any arbitrary position. Fourth, a data adaptive outlier detection algorithm is applied to identify and reject the outliers. The spatially-based outlier detection is beneficial compared to temporal one due to globally testing the deviations of the PS points to the model. Fifth, a 95% confidence interval is estimated for the approximated surface in the local geometric patches based on a bootstrapping approach. Subsequently, an appropriate quality model of the PS data is obtained by above-mentioned five steps temporal and spatial modellings.A deformation analysis is carried out for areas of interest in the state of Lower Saxony, Germany. In this study, the PS data points are extracted from freely available online platform of the BodenBewegungsdienst Deutschland (Ground Motion Service Germany) provided by the Federal Institute for Geosciences and Natural Resources (BGR), Germany. For the purpose of validation, a time series of leveling and Global Navigation Satellite System (GNSS) measurements in the area of Hengstlage, Germany, are considered, which provided by Landesamt für Geoinformation und Landesvermessung Niedersachsen (LGLN). In the end, the results of the deformation analysis are compared with the results obtained from the BGR. The outcomes of this study can be used to track earth surface displacements in time. This information could be helpful in understanding natural hazard processes such as landslides, earthquakes, and floods, and to improve the safety and resilience of communities and infrastructure.

M3 - Slides to presentation

T2 - GeoMonitoring 2023

Y2 - 9 March 2023 through 10 March 2023

ER -

By the same author(s)