Define remote sensing. Explain its components

Question

14 Sep 2022

Answer :

Word Count : 856

Remote sensing is the process of detecting and monitoring the physical characteristics of an area by measuring its reflected and emitted radiation at a distance (typically from satellite or aircraft). Special cameras collect remotely sensed images, which help researchers "sense" things about the Earth. Some examples are:

Cameras on satellites and airplanes take images of large areas on the Earth's surface, allowing us to see much more than we can see when standing on the ground.
Sonar systems on ships can be used to create images of the ocean floor without needing to travel to the bottom of the ocean.
Cameras on satellites can be used to make images of temperature changes in the oceans.

COMPONENTS OF REMOTE SENSING ARE:-

1 Energy Source or Illumination

The first requirement for remote sensing is to have an energy source, which illuminates or provides electromagnetic energy to the target of interest. Sensors can be classified as passive or active, based on the energy source they are using. Sensors, which sense natural radiations, __________ ______ ___ ________ __________ _________ ____ ____ ____ ______.
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