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  2. Communications satellite - Wikipedia

    en.wikipedia.org/wiki/Communications_satellite

    A communications satellite is an artificial satellite that relays and amplifies radio telecommunication signals via a transponder; it creates a communication channel between a source transmitter and a receiver at different locations on Earth. Communications satellites are used for television, telephone, radio, internet, and military ...

  3. Satellite - Wikipedia

    en.wikipedia.org/wiki/Satellite

    A communications satellite is an artificial satellite that relays and amplifies radio telecommunication signals via a transponder; it creates a communication channel between a source transmitter and a receiver at different locations on Earth. Communications satellites are used for television, telephone, radio, internet, and military ...

  4. Global Positioning System - Wikipedia

    en.wikipedia.org/wiki/Global_Positioning_System

    Demodulating and Decoding GPS Satellite Signals using the Coarse/Acquisition Gold code. Because all of the satellite signals are modulated onto the same L1 carrier frequency, the signals must be separated after demodulation. This is done by assigning each satellite a unique binary sequence known as a Gold code. The signals are decoded after ...

  5. Transponder (satellite communications) - Wikipedia

    en.wikipedia.org/wiki/Transponder_(satellite...

    A communications satellite's transponder is the series of interconnected units that form a communications channel between the receiving and the transmitting antennas. [1] It is mainly used in satellite communication to transfer the received signals. A transponder is typically composed of: an input band-limiting device (an input band-pass filter),

  6. Very-small-aperture terminal - Wikipedia

    en.wikipedia.org/wiki/Very-small-aperture_terminal

    ViaSat launched the highest capacity satellite ever, ViaSat-1, in 2011 to expand the WildBlue base under its Exede brand. In 2007, Hughes Communications started deploying K a band VSAT sites for consumers under its HughesNet brand on the Spaceway 3 satellite and later in 2012 on its EchoStar XVII/Jupiter 1 satellite. By September 2014, Hughes ...

  7. Satellite Internet access - Wikipedia

    en.wikipedia.org/wiki/Satellite_Internet_access

    For satellite Internet services in tropical areas with heavy rain, use of the C band (4/6 GHz) with a circular polarisation satellite is popular. [43] Satellite communications on the K a band (19/29 GHz) can use special techniques such as large rain margins, adaptive uplink power control and reduced bit rates during precipitation.

  8. Laser communication in space - Wikipedia

    en.wikipedia.org/wiki/Laser_communication_in_space

    Communication may be fully in space (an inter-satellite laser link) or in a ground-to-satellite or satellite-to-ground application. The main advantage of using laser communications over radio waves is increased bandwidth , enabling the transfer of more data in less time.

  9. Satellite phone - Wikipedia

    en.wikipedia.org/wiki/Satellite_phone

    A satellite telephone, satellite phone or satphone is a type of mobile phone that connects to other phones or the telephone network by radio link through satellites orbiting the Earth instead of terrestrial cell sites, as cellphones do. Therefore, they can work in most geographic locations on the Earth's surface, as long as open sky and the ...

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