yep On Sun, Jun 7, 2009 at 12:24 PM, Mal Bruce <[email protected]> wrote:
> The Globalstar network is crap. > > https://srt.glpconnect.com:2044/osat/ > > The Globalstar Network comprises 40 satellites operating at 1400km > altitude, and a ground gateway infrastructure. > > The satellites are organised into 8 orbital planes with 5 satellites per > plane. The orbital planes are inclined to the equator at 56 degrees which > provides an approximate coverage within the latitudes 70 degrees North to 70 > degrees South when ever there is co-visibility with a ground gateway. > > The Globalstar Network does not perform satellite to satellite cross-link > switching and so ground connection in Australia is by 3 gateways operated by > Pivotel. Outside of Australia there is a network of Globalstar partners who > operate gateways that provide international roaming coverage. > > > > The Iridium Network comprises 66 satellites operating at 780km altitude, > and the ground gateway infrastructure. > > The satellites are organised into 6 orbital planes with 11 satellites per > plane. This ensures that each location on the globe is covered by at least > one satellite at any one time. The satellites spin around the earth at over > 26,000km/h or circle the earth every 100 minutes, and the orbital planes go > over the poles. > > Each satellite is connected to four other satellites in the network. The > two adjacent satellites in the same plane and two satellites in the planes > either side. Through this cross-linking the satellites can route calls from > satellite to satellite until it reaches one in view of the ground gateway. > The ground gateway then connects the call to the Pivotel switching > infrastructure. > > _______________________________________________ > Aus-soaring mailing list > [email protected] > To check or change subscription details, visit: > http://lists.internode.on.net/mailman/listinfo/aus-soaring >
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