What is Remote Sensing?
Remote Sensing is one of the top most trending technologies that are having a growing impact on applied and scientific research. Remote Sensing may also be defined as “Acquiring information without any physical contact about a phenomenon or object especially of earth surface from satellite or aircraft”.
Remote Sensing sensors are used to obtain information by detecting the energy which is reflected from earth, these sensors can be satellite or fixed on aircraft.
Remote sensors can be passive or active. Passive sensor record natural energy which is reflected or emitted from the earth’s surface, it because of the help of sunlight/artificial light and Active sensor obtain data about earth surface using camera with flash.
Remote Sensing has a wide range of applications used in different fields, including earth science, such as climate change, ecology, hydrology, meteorology, oceanography, geography and land surveying, as well as intelligence, military, humanitarians, and planning etc.
One of the most important usages of Remote Sensing is given bellow:
GIS: Remote sensing and Geographical Information System (GIS) one of the two most important spatial technologies. GIS is a computer system to capture, store, manage, analyze, manipulate, and present spatial or geographic and georeferenced data. Remote Sensing is the important spatial data source for GIS.