LAND SUBSIDENCE MONITORING USING PS-InSAR TECHNIQUE FOR L-BAND SAR DATA
- 1Indian Institute of Remote Sensing, Dehradun 248 001, India
- 2Central Institute of Mining and Fuel Research, Dhanbad, India
- 3Indian School of Mines, Dhanbad 826004, India
Keywords: Differential Interferometric synthetic (D-InSAR), Persistent Scatterer Interferometry, Levelling, Anthropogenic targets
Abstract. Differential SAR-Interferometry (D-InSAR) is one of the potential source to measure land surface motion induced due to underground coal mining. However, this technique has many limitation such as atmospheric in homogeneities, spatial de-correlation, and temporal decorrelation. Persistent Scatterer Interferometry synthetic aperture radar (PS-InSAR) belongs to a family of time series InSAR technique, which utilizes the properties of some of the stable natural and anthropogenic targets which remain coherent over long time period. In this study PS-InSAR technique has been used to monitor land subsidence over selected location of Jharia Coal field which has been correlated with the ground levelling measurement. This time series deformation observed using PS InSAR helped us to understand the nature of the ground surface deformation due to underground mining activity.