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

Systeme Probatoire d'Observation del la Terre (SPOT)

Earth science; Remote sensing

Unmanned French remote sensing satellite orbiting in the late 1980s.

Electromagnetic radiation

Earth science; Remote sensing

Energy propagated in the form of and advancing interaction between electric and magnetic fields. All electromagnetic radiation moves at the speed of light.

Minimum ground separation

Earth science; Remote sensing

Minimum distance on the ground between two targets at which they can be resolved on an image.

Ground range

Earth science; Remote sensing

On radar images, the distance from the ground track to an object.

Line scanner

Earth science; Remote sensing

An imaging device which uses a mirror to sweep the ground surface normal to the flight path of the platform. An image is built up as a strip comprising lines of data.

Sensor

Earth science; Remote sensing

Device that receives electromagnetic radiation and converts it into a signal that can be recorded and displayed as either numerical data or an image.

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 ...