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

pass

Earth science; Remote sensing

In digital filters, refers to the spatial frequency of data transmitted by the filter. High-pass filters transmit high-frequency data; low-pass filters transmit low-frequency data.

intensity

Earth science; Remote sensing

In the IHS system, brightness ranging from black to white.

artefact

Earth science; Remote sensing

A feature on an image which is produced by the optics of the system or by digital image processing, and sometimes masquerades as a real feature.

radiant flux

Earth science; Remote sensing

Rate of flow of electromagnetic radiation measured in watts per square centimeter.

image dissection

Earth science; Remote sensing

The breaking down of a continuous scene into discrete spatial elements, either by the receptors on the retina, or in the process of capturing the image artificially.

polar orbit

Earth science; Remote sensing

An orbit that passes close to the poles, thereby enabling a satellite to pass over most of the surface, except the immediate vicinity of the poles themselves.

slant-range image

Earth science; Remote sensing

In radar, an image in which objects are located at positions corresponding to their slant-range distances from the aircraft path. On slant-range images, the scale in the range direction is ...