1.

How is remote sensing classified based on the source of energy? Why?

Answer»

Based on the source of energy, remote sensing can be classified into active remote sensing and passive remote sensing.

Active remote sensing : Remote sensing made with the aid of artificial source of energy radiating from the sensor is known as active remote sensing.

Eg : flash in camera Passive remote sensing: Remote sensing made with the help of solar energy is known as passive remote sensing. In this, the sensors do not emit energy by it self.



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