Remote sensing is the science and art of obtaining information about an object, area or phenomenon through the analysis of data aquired by a device that is not in contact with it.
This is done by sensing and recording reflected or emitted energy and processing, analyzing and applying that information.
In much remote sensing. the process involves an- interaction between incident radiation and the targets of interest. This device can be a camera or a bank of sensors operated from an airplane or a satellite. Though satellite we can collect date related agriculture, forest, urban land use, watcr, natural calamities etc the satellite data is based for mapping, monitoring, studyIng the various phenomena related to earth’* surface.
