Electromagnetic energy that is reflected back toward its source by terrain or particles in the atmosphere. Referenced by: LIDAR; Backscatter.
Electromagnetic energy at a particular wavelength Î" (in vacuum) has an associated frequency f and photon energy E. Thus, the electromagnetic spectrum may be expressed equally well in terms of any of these three quantities.
[remote sensing] Electromagnetic energy that is reflected back toward its source by terrain or particles in the atmosphere.
Electromagnetic Energy Energy stored in electromagnetic waves or radiation. Energy is released when the waves are absorbed by a surface.
sensitivity-Degree to which a detector responds to electromagnetic energy incident on it. sensor-Device that receives electromagnetic radiation and converts it into a signal that can be recorded and displayed as either numerical data or an image.
Remote Sensing - "Remote sensing is the science of deriving information about the earth's land and water areas from images acquired at a distance. It usually relies upon measurement of electromagnetic energy reflected or emitted from the features ...
Multispectral scanners record a wide range of electromagnetic energy, including ultraviolet, visible, infrared and thermal radiation, and are important components of many satellite remote sensing platforms.
A yield monitor (and remotely sensed data for that matter) provides a direct measurement for each spatial unit (average of several yield readings or integration of electromagnetic energy).
 See also: Surface, Information, Area, Object, Location
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