Using D-InSAR and offset tracking technique to monitor mining subsidence
作者： Depin Ou , Kun Tan , Shiyong Yan
DOI: 10.1109/EORSA.2016.7552838
关键词:
摘要: Differential synthetic aperture radar interferometry (D-InSAR) technology is a popular method to monitor ground deformation. Two-pass D-InSAR and sub-pixel offset tracking approaches are presented analyze the mining subsidence, which located in Yuxian, Hebei province, China. The availability of 20 commissioned TerraSAR-X (TSX) Spotlight SAR images were acquired from 9th June 2015 4th January 2016. To avoid decorrelation between acquisitions, every 11-day TSX pair was processed so that 19 image pairs formed. While differential interferograms obtained based on SRTM DEM, interference fringes too much denser or de-coherence main area result phase unwrapping error wrong Although rapid sedimentation rate's areas would be failed, we can obtain direction by means time series settlement analyzing. has limitation high-gradient deformation zone cannot unwrapped truly because will phrase overlap decorrelation. improve accuracy these areas, pixel used. Comparing with leveling results, unequal reach up 1m. In this experiment, two 3th August, January, 2016 applied calculate through technology. subsidence 1.96m coal area.
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