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

Film speed

Earth science; Remote sensing

Measure of the sensitivity of photographic film to light. Larger numbers indicate higher sensitivity.

Volume scattering

Earth science; Remote sensing

In radar, interaction between electromagnetic radiation and the interior of a material.

Density of images

Earth science; Remote sensing

Measure of the opacity, or darkness, of a negative or positive transparency.

Pushbroom scanner

Earth science; Remote sensing

An alternate term for an along-track scanner.

Spectrometer

Earth science; Remote sensing

Device for measuring intensity of radiation absorbed or reflected by a materiel as a function of wavelength.

Scotopic vision

Earth science; Remote sensing

Vision under conditions of low illumination, when only the rods are sensitive to light. Visual acuity under these conditions is highest in the blue part of the spectrum.