Monitoring of Power Towers’ Movement Using Persistent Scatterer SAR Interferometry in South West of Tehran
نویسندگان
چکیده
The Tehran basin has been increasingly affected by subsidence during the last few decades due to groundwater withdrawal. Hence, study of strength power towers (PTs) transmission lines, as vital structures, is an important subject. In this paper, persistent scatterer interferometry (PSI) method was applied on data stacks from two satellites (i.e., X-band COSMO-SkyMed (CSK) and C-band Sentinel-1A (S-1A)) obtained between 2014 2016 investigate deformation exact amount displacement in each PT area interest. Based results, same time interval (between October February 2016), vertical velocities calculated using CSK S-1A were about −86 −79 mm/y, respectively. Although analysis resulted a better interpretation PTs, its high resolution shorter wavelength, S-1 also demonstrated sufficient (PS) points. research proves that most PTs along line are land subsidence, which puts them serious jeopardy. They must be constantly monitored ensure their safety accurate operation. results complete agreement with information existing global positioning system (GPS) station our observations piezometric wells declining trends reservoir, greatest effect rate area. revealed at risk.
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ژورنال
عنوان ژورنال: Remote Sensing
سال: 2021
ISSN: ['2315-4632', '2315-4675']
DOI: https://doi.org/10.3390/rs13030407