Geography Reference
In-Depth Information
Different sensor types. Passive sensors use only reflected electromagnetic radiation
(EMR). Active sensors use emitted EMR.
sensing involves and what some of the key issues and applications for remote
sensing are.
Electromagnetic Radiation
Any understanding of remote sensing, regardless of the sensor technology,
storage media, or application, starts with understanding EMR. First off,
remote sensing's detection of EMR has three characteristics:
Emitted and reflected electromagnetic energy.
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