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IBS (Intelsat Business Services)
InclinationThe angle between the orbital plane of a satellite and the equatorial plane of the earth expressed in degrees of inclination.
INMARSATThe International Maritime Satellite Organization operates a network of satellites for international transmissions for all types of international mobile services including maritime, aeronautical, and land mobile.
INTELSATThe International Telecommunications Satellite Organization operates a network of satellites for international transmissions.
InterferenceEnergy which tends to interfere with the reception of the desired signals, such as fading from airline flights, RF interference from adjacent channels, or ghosting from reflecting objects such as mountains and buildings. Interference which occurs on the satellite is usually generated from other uplink facilities signals or from natural occurring spatial phenomenom such as solar flares and sunspots. Uplink and downlink interference that is generated from a nearby source on the ground is referred to as terrestrial interference (TI).
Interlaced Video
Lines of spatial information in a video signal. Interlaced video lines consists of two fields, a top field and a bottom field. One of these fields will commence one field period later than the other.
IRD (Integrated Receiver/Decoder)
IRT (Integrated Receiver/Transcoder)
ISDN - Integrated Services Digital NetworkA CCITT standard for integrated transmission of voice, video and data. Bandwidths include: Basic Rate Interface - BR (144 Kbps - 2 B & 1 D channel) and Primary Rate - PRI (1.544 and 2.048 Mbps).
ISO - International Standardization Organization
Isochronous(1) A constant-rate of transmission necessary for
video and audio streams. The term isochronous defines the characteristics of the clock
that is associated with synchronous data. An isochronous clock has a jitter specification
that defines position of the edges of the clock at any instant in time.
(2) A window that displays in the UCS software used to specify the isochronous data
component.
A hypothetical omnidirectional point-source antenna that serves as an engineering reference for the measurement of antenna gain.
ITU - International Telecommunication Union
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