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Our South Pole station also uses 12 lashed up voice circuits to provide Internet service when the serious telecom satellites are below the horizon: http://www.u
by hga 10y ago
Our South Pole station also uses 12 lashed up voice circuits to provide Internet service when the serious telecom satellites are below the horizon: http://www.usap.gov/technology/contentHandler.cfm?id=1972 http://www.usap.gov/technology/contentHandler.cfm?id=1972
"This advanced [lash up] technology delivers a gross throughput equivalent to a home user with a 28.8 Kbps dial-up modem. The IMCS uses more than 13.5 million satellite airtime minutes each year."
(See http://www.usap.gov/technology/contentHandler.cfm?id=1935 http://www.usap.gov/technology/contentHandler.cfm?id=1935 for the general picture of their telecom.)
- walrus01 10y agoIridium coverage at the poles is EXCELLENT because the satellites all converge over the polar regions, being in orbital inclinations of something like 82 to 90 degrees. There are also a lot of unattended weather monitoring and science data M2M things in Antarctica that use Iridium embedded modems. multilink PPP over Iridium for polar regions: https://www.ittc.ku.edu/publications/documents/Mohammad2004_ISART_Mohammad.pdf https://www.ittc.ku.edu/publications/documents/Mohammad2004_...