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