Remote sensing

Remote sensing

The process of using aerial sensor technologies to detect and classify objects on Earth both on the surface, and in the atmosphere and oceans by means of propagated signals.

Industry: Earth science

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Remote sensing

Primary colours

Earth science; Remote sensing

A set of three colours that in various combinations will produce the full range of colours in the visible spectrum. There are two sets of primary colors, additive and subtractive.

Jet Propulsion Laboratory (JPL)

Earth science; Remote sensing

A NASA facility at Pasadena, California, operated under contract by the California Institute of Technology.

Watt (W)

Earth science; Remote sensing

Unit of electrical power equal to rate of work done by one ampere under a potential of one volt.

Absorptivity

Earth science; Remote sensing

Capacity of a material to absorb incident radiant energy.

Microwave

Earth science; Remote sensing

Region of the elctromagnetic spectrum in the wavelength range of 0. 1 to 30 cm.

Batch processing

Earth science; Remote sensing

Method of data processing in which data and programmes are entered into a computer that carries out the entire processing operation with no further instructions.

Band

Earth science; Remote sensing

A wavelength interval in the electromagnetic spectrum. For example, in Landsat images the bands designate specific wavelength intervals at which images are acquired.