In satellite communications, that portion of the satellite link that is in orbit.

Any group of cooperating Earth stations and/or space stations employing space radiocommunication for specific purposes. [NTIA] [RR] [47CFR]

1. The use of radiocommunication for the transmission of signals to a space station to initiate, modify or terminate functions of equipment on an associated space object, including the space station. [NTIA] [RR]
2. The use of radiocommunication for the transmission of signals to a space station to initiate, modify or terminate function of the equipment on a space object,… (Read More →)

The use of telemetry for the transmission from a space station of results of measurements made in a spacecraft, including those relating to the functioning of spacecraft. [NTIA] [RR]

Determination of the orbit, velocity or instantaneous position of an object in space by means of radiodetermination, excluding primary radar, for the purpose of following the movement of the object. [NTIA] [RR] [47CFR]

A misnomer.
Note: Space-division multiplexing has been improperly applied to the use of multiple physical transmission channels, e.g., twisted pairs or optical fibers, under one sheath.

In telephony, switching in which single transmission-path routing determination is accomplished in a switch by using a physically separated set of matrix contacts or cross-points.

A man-made vehicle which is intended to go beyond the major portion of the Earth's atmosphere. [NTIA] [RR] [47CFR]

The uniform lengthening of all spacing signal pulses at the expense of the pulse width of all marking signal pulses.

See end distortion.