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

spectral sensitivity

Earth science; Remote sensing

Response, or sensitivity, of a film or detector to radiation in different spectral regions.

A planned series of three polar-orbiting, sun-synchronous satellites to be launched by NASA, the European Space Agency, and the Japanese Space Agency in the 1990s. They will carry a large range of ...

radar

Earth science; Remote sensing

Acronym for radio detection and ranging. Radar is an active form of remote sensing that operates in the microwave and radio wavelength regions.

computer-compatible tape (CCT)

Earth science; Remote sensing

The magnetic tape on which the digital data for Landsat MSS and TM images are distributed.

spatial-frequency filtering

Earth science; Remote sensing

The analysis of the spatial variations in DN of an image and the separation or suppression of selected frequency ranges.

ratio image

Earth science; Remote sensing

An image prepared by processing digital multi-spectral data as follows: for each pixel, the value for one band is divided by that of another. The resulting digital values are displayed as an image.