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We're Jammin' (Part III)
24/02/10
First off, let's get a few things straight. GPS works by using a constellation of about 30 medium earth orbit (MEO) satellites run by the US military which go whizzing around the earth twice every day at a height of 20,000 km to transmit position and time information to receivers on the ground
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We're Jammin' (Part III)
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