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  2. FleetBroadband - Wikipedia

    en.wikipedia.org/wiki/FleetBroadband

    FleetBroadband is maritime satellite internet, telephony, SMS texting, and ISDN network for ocean-going vessels using portable domed terminal antennas.. These antennas and corresponding indoor controllers are used to connect phones and laptop computers from sailing vessels to the Internet.

  3. Footprint (satellite) - Wikipedia

    en.wikipedia.org/wiki/Footprint_(satellite)

    The ellipses indicate the necessary antenna diameter for receiving in cm. The footprint of a communications satellite is the ground area that its transponders offer coverage, and determines the satellite dish diameter required to receive each transponder's signal. There is usually a different map for each transponder (or group of transponders ...

  4. Antenna tracking system - Wikipedia

    en.wikipedia.org/wiki/Antenna_tracking_system

    A secondary antenna has a greater beam width than the primary antenna and receives the same tracking signal from the satellite. The primary antenna is tracked according to a predetermined search pattern which causes a variation in the signal amplitude depending upon the relative location of the satellite and the antenna position.

  5. Comparison of free off-line satellite navigation software

    en.wikipedia.org/wiki/Comparison_of_free_off...

    Some of the free software mentioned here does not have detailed maps (or maps at all) or the ability to follow streets or type in street names (no geocoding). However, in many cases, it is also that which makes the program free (and sometimes open source [ 1 ] ), avoid the need of an Internet connection, [ 2 ] [ 3 ] [ 4 ] and make it very ...

  6. Coverage map - Wikipedia

    en.wikipedia.org/wiki/Coverage_map

    The advantage of this approach is that the coverage maps show network reach and performance as it is experienced by its users. Often companies will construct low power satellite stations to fill in bad reception areas that become apparent once the high power transmitter's coverage map has identified where the network is deficient.

  7. Satellite geolocation - Wikipedia

    en.wikipedia.org/wiki/Satellite_geolocation

    Once a DTO calculated, it can be combined with the known position of the satellites and the receiving station. This combination provides a locus of positions on the Earth’s surface for the source of the signal; from this result a line of position (LOP) can be derived. A similar line can be derived for the frequency differences.

  8. 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),

  9. Universal Satellites Automatic Location System - Wikipedia

    en.wikipedia.org/wiki/Universal_Satellites...

    Pointing to a known satellite position (for example 19.2ºE) is enough; this position will act as the central point, and the USALS system will then calculate visible satellites position within the offset. Receivers are aligned to the satellite most southern to their position in the northern hemisphere, or the northernmost in the southern ...