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New generation GPS satellite starts tests

AssociatedPress-"A $5.5 billion upgrade to the Global Positioning System moved a step closer to launch this week when a prototype arrived at a Lockheed Martin complex in Colorado to begin months of tests.
It's the guinea pig for a new generation of GPS satellites, called Block III, that's expected to make military and civilian receivers more accurate, powerful and reliable.
They're also part of an international effort to allow civilian receivers to use signals from U.S., European, Russian and perhaps other satellite navigation systems."

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