It is sensing of the earth surface from satellites in space. Sensors detect, record electromagnetic energy reflected from earth, this information is transmitted to receiving the station on the ground, then processed into an image.
A geographic information system (GIS) is a system designed to capture, store, manipulate, analyze, manage, and present all types of geographical data. What can we do with GIS? GIS can be used as the tool in both problems solving and decision-making processes, as well as for visualization of data in a spatial environment. Q.Editor
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