New GPS satellite operational

November 6, 2007 The fourth in a series of eight modernized Global Positioning System (GPS) satellites that will deliver new capabilities to military and civilian users has been declared fully operational. Launched from Cape Canaveral October 17 as part of the Global Positioning System Block IIR (GPS IIR-M), the new GPS IIR-17M satellite features increased signal power to receivers on the ground, two new military signals for improved accuracy, enhanced encryption and anti-jamming capabilities for the military, and a second signal that will provide civilian GPS users with an open access signal on a different frequency.

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