The majority digital elevation models are constructed using distant sensing techniques and gear, similar to satellite radar and airplane imaging. However, in several cases data procured by the traditional system of straight land surveying is also implemented into the formation of DEMs. Some of the most ordinary uses of DEMs are in what is recognized as digital information systems (DIS). These are systems used by governments and huge industries to appraise and investigate the conditions of a given area.
Digital Elevation Models
