The European Union has opened its Egnos navigation augmentation system for
"The EGNOS signals can be received by GPS receivers equipped with a specific
software. In combination with Egnos signals, the accuracy of GPS navigation
can be improved significantly; according to ESA, users can navigate with an
accuracy of about 2 meters as opposed to GPS alone which provides an
accuracy of 10 meters."
(some more information: http://www.egnos-pro.esa.int/index.html)
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