Satellites

Satellites

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

Contributors in Satellites

Satellites

The ratio of the signal power and noise power. A video S/N of 54 to 56 dB is considered to be an excellent S/N, that is, of broadcast quality. A video S/N of 48 to 52 dB is considered to be a good ...

Multicast

Aerospace; Satellites

Multicast is a subset of broadcast that extends the broadcast concept of one to many by allowing "the sending of one transmission to many users in a defined group, but not necessarily to all users in ...

Multiplexing

Aerospace; Satellites

Techniques that allow a number of simultaneous transmissions over a single circuit.

Noise

Aerospace; Satellites

Any unwanted and unmodulated energy that is always present to some extent within any signal.

Modulator

Aerospace; Satellites

A device which modulates a carrier. Modulators are found as components in broadcasting transmitters and in satellite transponders. Modulators are also used by CATV companies to place a baseband video ...

Slot

Aerospace; Satellites

That longitudinal position in the geosynchronous orbit into which a communications satellite is "parked". Above the United States, communications satellites are typically positioned in slots which ...