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  2. Galileo (satellite navigation) - Wikipedia

    en.wikipedia.org/wiki/Galileo_(satellite_navigation)

    These testbed satellites were followed by four IOV Galileo satellites that are much closer to the final Galileo satellite design. The search and rescue (SAR) feature is also installed. [132] The first two satellites were launched on 21 October 2011 from Centre Spatial Guyanais using a Soyuz launcher, [133] the other two on 12 October 2012. [134]

  3. Satellite navigation - Wikipedia

    en.wikipedia.org/wiki/Satellite_navigation

    Galileo is expected to be compatible with the modernized GPS system. The receivers will be able to combine the signals from both Galileo and GPS satellites to greatly increase the accuracy. The full Galileo constellation consists of 24 active satellites, [20] the last of which was launched in December 2021.

  4. List of Galileo satellites - Wikipedia

    en.wikipedia.org/wiki/List_of_Galileo_satellites

    Model of a Galileo satellite. This is a list of past and present satellites of the Galileo navigation system.The fully operational constellation will nominally consist of 30 satellites in Medium Earth Orbit, with 24 active and 6 spares equally divided into 3 orbital planes in a Walker 24/3/1 configuration.

  5. Satellite navigation device - Wikipedia

    en.wikipedia.org/wiki/Satellite_navigation_device

    In contrast, the European Galileo was conceived as purely civilian. In 1960, the US Navy put into service its Transit satellite-based navigation system to aid in naval navigation. The US Navy in the mid-1960s conducted an experiment to track a submarine with missiles with six satellites and orbiting poles and was able to observe satellite ...

  6. European Satellite Navigation Industries - Wikipedia

    en.wikipedia.org/wiki/European_Satellite...

    European Satellite Navigation Industries, formerly called Galileo Industries until legal action prompted a name change, was a joint venture of the companies Alcatel Alenia Space and Thales (France), Finmeccanica (Italy), EADS Astrium (UK and Germany) and Galileo Sistemas y Servicios (a consortium of seven Spanish companies).

  7. Galileo project - Wikipedia

    en.wikipedia.org/wiki/Galileo_project

    Galileo was an American robotic space program that studied the planet Jupiter and its moons, ... the tracking and data relay satellite system, ...

  8. International Cospas-Sarsat Programme - Wikipedia

    en.wikipedia.org/wiki/International_Cospas...

    Logo as used until 1992. The International Cospas-Sarsat Programme is a satellite-aided search and rescue (SAR) initiative. It is organized as a treaty-based, nonprofit, intergovernmental, humanitarian cooperative of 45 nations and agencies (see infobox). [2]

  9. GNSS applications - Wikipedia

    en.wikipedia.org/wiki/GNSS_applications

    Global Navigation Satellite System (GNSS) receivers, using the GPS, GLONASS, Galileo or BeiDou system, are used in many applications. The first systems were developed in the 20th century, mainly to help military personnel find their way, but location awareness soon found many civilian applications.

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