Analysis of Vertical Land Displacement using Permanent Scatterer Interferometry (PSI)


Authors : Pradip Aryal; Netra Bahadur Katuwal

Volume/Issue : Volume 8 - 2023, Issue 12 - December

Google Scholar : http://tinyurl.com/2wp2fdrn

Scribd : http://tinyurl.com/yckep3jr

DOI : https://doi.org/10.5281/zenodo.10409164

Abstract : In steep mountainous areas, landslides are a widespread geological hazard that endangers people's lives as well as infrastructure and the environment. Ground deformation measurement has changed as a result of advancements in monitoring techniques, notably with regard to InSAR approaches and conventional to contemporary satellite systems. With its advantages of high precision and dynamic real-time monitoring, InSAR makes use of radar interferometry for economical and wide-ranging coverage. InSAR technology, has shown promise in tracking risk scenarios. Operating in TOPS mode, the Sentinel-1 satellite system is selected because to its extensive coverage, frequent acquisitions (12-day return intervals), and open data policy. Based on 47 Sentinel-1A SAR acquisitions from 2021-01-12 to 2022-12-21 for PSI, the study applied PS technique and found out that the average displacement in the region to be ranged from -179.46 to 159.64 over the research duration. Comparing our result with the stable point on ongoing tunnel project the R square value was found to be 0.867 with standard error of 0.008.

Keywords : In SAR, Persistent Scatter(PS), Landslide.

In steep mountainous areas, landslides are a widespread geological hazard that endangers people's lives as well as infrastructure and the environment. Ground deformation measurement has changed as a result of advancements in monitoring techniques, notably with regard to InSAR approaches and conventional to contemporary satellite systems. With its advantages of high precision and dynamic real-time monitoring, InSAR makes use of radar interferometry for economical and wide-ranging coverage. InSAR technology, has shown promise in tracking risk scenarios. Operating in TOPS mode, the Sentinel-1 satellite system is selected because to its extensive coverage, frequent acquisitions (12-day return intervals), and open data policy. Based on 47 Sentinel-1A SAR acquisitions from 2021-01-12 to 2022-12-21 for PSI, the study applied PS technique and found out that the average displacement in the region to be ranged from -179.46 to 159.64 over the research duration. Comparing our result with the stable point on ongoing tunnel project the R square value was found to be 0.867 with standard error of 0.008.

Keywords : In SAR, Persistent Scatter(PS), Landslide.

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