New GPS satellite launched

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A new, $75 million satellite was launched yesterday as part of a series of eight launches to improve the GPS network.  According to the web site Spaceflight Now, “The modernized satellites transmit additional signals and feature improvements aimed at greater accuracy, tougher resistance to interference and enhanced performance for users around the world.  The new civilian signal removes navigation errors caused by the Earth’s ionosphere.”

The new satellite, called GPS 2R-17, will replace a GPS satellite launched in 1992 with a 7-year life span.   Four more satellites will launch over the next 11 months to complete the upgrade.

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