Satellites

Satellites

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

Contributors in Satellites

Satellites

An antenna down-link pattern used by the Intelsat satellites, which effectively covers one-third of the globe. Global beams are aimed at the centre of the Atlantic, Pacific and Indian Oceans by the ...

Gain

Aerospace; Satellites

A measure of amplification expressed in dB.

Geostationary

Aerospace; Satellites

An object orbiting the earth at such speed that it appears to remain stationary with respect to the earth's surface.

Geosynchronous

Aerospace; Satellites

The Clarke circular orbit above the equator. For a planet the size and mass of the earth, this point is 22,237 miles above the surface.

Scalar feed

Aerospace; Satellites

A type of horn antenna feed which uses a series of concentric rings to capture signals that have been reflected toward the focal point of a parabolic antenna.

Scrambler

Aerospace; Satellites

A device used to electronically alter a signal so that it can only be viewed or heard on a receiver equipped with a special decoder.

Secam

Aerospace; Satellites

A colour television. system developed by the French and used in the USSR. Secam operates with 625 lines per picture frame and 50 cycles per second, but is incompatible in operation with the European ...