What exactly is remote sensing?
In laymen's terms, remote sensing (RS) is the process whereby information of an object, or many objects, is collected from afar, i.e. without being in direct contact with it. Humans and other animals apply RS inherently through vision (which is a sensing activity), but generally the term "remote" is only used when the target is out of reach. This is in contrast to proximal sensing, which shares many of the same principles and tools as RS, but is performed in close proximity (