Satellites

Satellites

Of or relating to any man-made object launched to orbit Earth or another celestial body.

Industry: Aerospace

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Satellites

spectral band

Aerospace; Satellites

An interval in the electromagnetic spectrum defined by two wavelengths, frequencies, or wave numbers. With Landsat, bands designate the specific wavelength intervals at which images are acquired. ...

aperture

Aerospace; Satellites

An opening that admits electromagnetic radiation to a film or detector. An example would be the lens diaphragm opening in a camera.

signature

Aerospace; Satellites

Any characteristic or series of characteristics by which a material may be recognized. Used in the sense of spectral signature, as in photographic color reflectance. A category is said to have a ...

Any device that gathers energy and presents it in a form suitable for obtaining information about the environment. Passive sensors, such as the ETM+, TM, and MSS, utilize electromagnetic radiation ...

scanner

Aerospace; Satellites

Any device that systematically breaks up an image into picture elements (or pixels) and records some attribute of each picture element. The sweep of a scanner's mirror, prism, antenna, or other ...

background

Aerospace; Satellites

Any effect in a sensor or other apparatus or system above which the phenomenon of interest must manifest itself before it can be observed. See background noise.