Monitoring ground deformation in Hong Kong International Airport with NL-InSAR filtering

In this study, an advanced InSAR time-series analysis technique was applied to obtain the ground subsidence result in Hong Kong International Airport with 29 TerraSAR-X SpotLight images. In oder to improve the accuracy of monitoring points and the quality of both interferogram and coherence, the NL-InSAR filter is adopted in this processing framework. The result demonstrates the great prospects of NL-InSAR filter in InSAR time series analysis technique.