Remote Sensing

Paper Summary:

This paper examines how remote sensing can be broken down to New World and Old World. It looks at how New World involves aerial photography from artificial satellites and how Old World involves procedures like electromagnetic and resistivity surveying.

From the Paper:

"The world emits energy in the form of electromagnetic waves. There are many sources of energy and the most important one is the sun. Satellites mostly portray the land with respect to the electromagnetic spectrum. There can be two types of sensing active and passive sensing. Active sensing involves the satellite to send waveforms that interact with certain parts of the land (including water) and give off different waveforms in the spectrum. The passive sensing involves just reading the waveforms from different sources (like the sun) and portraying them. One advantage of active sensing as opposed to passive is that measurements can be recorded anytime where in passive it has to be done when the naturally occurring energy is available."

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