Simulation of Globalstar Constellation (SaVi)

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Uploaded by on Mar 8, 2009

Simulation of Globalstar constellation using SaVi and Lloyd Wood's simulation script. http://personal.ee.surrey.ac.uk/Personal/L.Wood/software/SaVi/

OPERATIONAL SYSTEMS

Globalstar

This is the 'perfect' fully-deployed first-generation Globalstar system, which provides voice and low-rate data services.

Full constellation launched as of November 1999; notably lost twelve satellites on a failed Zenit 2 launch in September 1998. Service officially launched in October 1999. Filed for US Chapter 11 bankruptcy protection February 2002, and re-emerged in April 2004.

Despite the name, this does not offer global coverage, and is not a Walker polar star constellation. The geometry is that of a Walker delta, or a Ballard rosette. Does not use intersatellite links; connections are only completed when a ground gateway station shares a footprint with a terminal.

See also http://www.globalstar.com/.

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Science & Technology

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