Preety, Kumari2022-10-192022-10-192022-08http://hdl.handle.net/123456789/2468enDigital elevation models (DEMs)Global Digital Elevation Models (GDEMs)Differential Global Positioning System (DGPS)MobileGPSPh.DAGLPH2174Assessment of vertical accuracy relative performance and enhancement of space-based digital elevation models(DEMs) using differential global positioning system (DGPs)Thesis