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

Doppler principle

Earth science; Remote sensing

Describes the change in observed frequency that electromagnetic or other waves undergo as a result of the movement of the source of waves relative to the observer.

Classification

Earth science; Remote sensing

Process of assigning individual pixels of an image to categories, generally on the basis of spectral reflectance characteristics.

Backscatter

Earth science; Remote sensing

In radar, the portion of the microwave energy scattered by the terrain surface directly back toward the antenna.

Bin

Earth science; Remote sensing

One of a series of equal intervals in a range of data, most commonly employed to describe the divisions in a histogram.

Specific heat

Earth science; Remote sensing

The ratio of the heat capacity of unit mass of a material to the heat capacity of unit mass of water.

Noise

Earth science; Remote sensing

Random or repetitive events that obscure or interfere with the desired information.

Heat capacity

Earth science; Remote sensing

Ratio of heat absorbed or released by a material to the corresponding temperature rise or fall. Expressed in calories per gramme per degree centigrade. Also called thermal capacity.