RESEARCH INTERESTS Technique developments on 1) synthetic aperture radar (SAR), interferometric SAR (InSAR), persistent scatterer InSAR (PSInSAR) processing, multi-aperture InSAR (MAI) processing and 3D deformation construction from InSAR and MAI/offset measurements, 2) high-resolution digital elevation model (DEM) generation with InSAR, 3) land cover characterization with SAR and Landsat imagery, and 4) InSAR deformation mapping with ERS-1, ERS-2, Radarsat-1, JERS-1, SIR-C, SRTM, Envisat, ALOS-1/-2, TerraSAR-X, TanDEM-X, COSMO-SkyMed, Sentinel-1A/B satellite SAR imagery.