Earth science

Earth science

Any of several geological sciences that are concerned with the earth, its origins, and all of its various structures and physical forms and phenomena.

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Earth science > Remote sensing

modulate

Earth science; Remote sensing

To vary the frequency, phase, or amplitude of electromagnetic waves.

Greenwich mean time (GMT)

Earth science; Remote sensing

This international 24-h system is used to designate the time at which Landsat images are acquired.

large format camera (LFC)

Earth science; Remote sensing

An experiment first carried on the Space Shuttle in October 1984.

data collection system (DCS)

Earth science; Remote sensing

On Landsats 1 and 2, the system that acquired information from seismometers, flood gauges, and other measuring devices. These data were relayed to ground receiving stations.

acuity

Earth science; Remote sensing

A measure of human ability to perceive spatial variations in a scene. It varies with the spatial frequency, shape, and contrast of the variations, and depends on whether the ...