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

thermal crossover

Earth science; Remote sensing

On a plot of radiant temperature versus time, the point at which temperature curves for two different materials intersect.

periodic line dropout

Earth science; Remote sensing

Defect on Landsat MSS or TM images in which no data are recorded for every sixth or sixteenth scan line, causing a black line on the image.

thermal diffusivity (k)

Earth science; Remote sensing

Governs the rate at which temperature changes within a substance, expressed in centimeters squared per second.

evaporative cooling

Earth science; Remote sensing

Temperature drop caused by evaporation of water from a moist surface.

Ability to separate closely spaced objects on an image or photograph. Resolution is commonly expressed as the most closely spaced line-pairs per unit distance that can be distinguished. Also called ...

background

Earth science; Remote sensing

Area on an image or the terrain that surrounds an area of interest, or target.

variance

Earth science; Remote sensing

A measure of the dispersion of the actual values of a variable about its mean. It is the mean of the squares of all the deviations from the mean value of a range of data.