FORESTRY
REMOTE SENSING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Sensing electromagnetic radiation
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MAGIC of course
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With cameras on loop
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Using remote sensing cameras mounted to the body and projected to earth
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Detailed explanation-1: -Satellites use different kinds of sensors to collect electromagnetic radiation reflected from the Earth. Passive sensors collect radiation which the Sun emits and the Earth reflects, and don’t require energy. Active sensors emit radiation themselves and analyze it after it is reflected back from the Earth.
Detailed explanation-2: -Satellite sensors can detect light that we can’t see. The electromagnetic energy reflects off the Earth’s surface and up to the satellite sensor, which collects and records information about that energy. That information is transmitted to a receiving station in the form of data that are processed into an image.
Detailed explanation-3: -Two characteristics of electromagnetic radiation are particularly important for understanding remote sensing. These are the wavelength and frequency. The wavelength is the length of one wave cycle, which can be measured as the distance between successive wave crests.