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Beidou G4



Beidou-G4, a Chinese navigation satellite, was launched from Xichang on 31 October 2010 at 16:26 UT by a Long March 3C rocket. Beidou-G4 is part of China's Compass Navigation Satellite System (CNSS) which will eventually consist of 35 vehicles providing continuous, real-time passive 3D geo-spatial positioning and speed measurement. CNSS will have two levels of service, ranging from a civilian service which will allow for an accuracy of 10 m in the user position, 0.2 m/s on the user velocity and 50 ns in time accuracy; and the military and authorized users service, providing higher accuracies. The system will provide services for users in China and its neighboring regions, covering an area of about 120° longitude in the Northern Hemisphere. Beidou-G4 is expected to have a lifespan of eight years.

Alternate Names

  • Beidou-G4
  • 37210

Facts in Brief

Launch Date: 2010-10-31
Launch Vehicle: Long March 3C
Launch Site: Xichang, Peoples Republic of China

Funding Agency

  • China National Space Administration (Peoples Republic of China)


  • Navigation/Global Positioning

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office

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