Geospatial technology includes Global Navigation Satellite Systems (GNSS), remote sensing (optical remote sensing, ground penetration radar (GPR), interferometric SAR (InSAR) and LiDAR) and Geographical Information Systems (GIS). LSGI's research focuses on the development of theories and methodologies of GNSS, remote sensing and GIS and application of these technologies. In theory and methodology, efforts are devoted to some key issues (such as atmospheric effect, reliability, uncertainty, and scale) for precision positioning to measure ground features, underground (utility survey) and under-water (hydrographic survey), robust feature extraction and interpretation from images, reliable mining and analysis of spatio-temporal data. In applications, the Department is focused on construction and environment.
One of the main research topics is mapping, such as automated updating of topographic map, land cover and change detection, planetary mapping (e.g. Mars and Moon), thematic mapping (environment, socio-economic data) and seabed mapping. New cartographic technology for mapping such as dynamic and animated maps, schematic maps, cartograms, navigational maps and personalized maps.
Another main research topic is construction, including the monitoring of structures, land subsidence, ground deformation and landslides; construction management, and underground utility. A focus is the integrated INSAR and GNSS for such applications.
The third main research topic is the geospatial technology for environmental studies, including studies of air quality, water quality, vegetation, sea levels, hydrology and glaciers.