narrow satellite communications

См. также в других словарях:

• Defense Satellite Communications System — The Defense Satellite Communications System (DSCS)[1] provides the United States with military communications to support globally distributed military users. DSCS will be replaced by the Wideband Global SATCOM system. A total of 14 DSCS III… …   Wikipedia

• satellite communication — Introduction  in telecommunication, the use of artificial satellites to provide communications links between various points on Earth (Earth satellite). Communications satellites relay voice, video, and data signals between widely separated fixed… …   Universalium

• Satellite television — List of digital television broadcast standards DVB standards (Europe) DVB S (satellite) DVB S2 DVB T (terrestrial) DVB T2 DVB C …   Wikipedia

• 50th Space Communications Squadron — The 50th Space Communications Squadron (50 SCS) is a squadron of the United States Air Force located at Schriever Air Force Base, Colorado. The squadron provides command and control systems, configuration control, and systems integrations for… …   Wikipedia

• Regenerative Satellite Mesh - A Air Interface — (RSM A) is an internationally standardized satellite communications protocol by Telecommunications Industry Association and European Telecommunications Standards Institute.It is based upon the SPACEWAY Ka band communications system developed by… …   Wikipedia

• Battlefield Airborne Communications Node (BACN) — The Battlefield Airborne Communications Node ( BACN ) is a military prototype for a remotely accessed, high altitude, and tactically oriented communications and networking node intended for use on Unmanned Aerial Vehicles. Initiated in December… …   Wikipedia

• telecommunications media — Introduction       equipment and systems metal wire, terrestrial and satellite radio, and optical fibre employed in the transmission of electromagnetic signals. Transmission media and the problem of signal degradation       Every… …   Universalium

• Parabolic antenna — A parabolic satellite communications antenna at Erdfunkstelle Raisting, the biggest facility for satellite communication in the world, in Raisting, Bavaria, Germany. It has a Cassegrain type feed. A parabolic antenna is an antenna that uses a… …   Wikipedia

• Microwave transmission — The atmospheric attenuation of microwaves in dry air with a precipitable water vapor level of 0.001 mm. The downward spikes in the graph correspond to frequencies at which microwaves are absorbed more strongly, such as by oxygen molecules… …   Wikipedia

• Spread spectrum — Passband modulation v · d · e Analog modulation AM · …   Wikipedia

• Horn antenna — Pyramidal microwave horn antenna, with a bandwidth of 0.8 to 18 GHz. A coaxial cable feedline attaches to the connector visible at top. This type is called a ridged horn; the curving fins visible inside the mouth of the horn increase the antenna… …   Wikipedia