Article: Global Positioning update.(Global Positioning System)(Brief Article)

Some recent events will affect the Global Positioning Satellite System (GPS) and the frequencies it uses. First, the government turned off a signal degradation that caused intentional errors. Then the World Radiocommunication Conference (WRC) allocated additional spectrum for GPS and for the European system Galileo. And now, the focus has shifted to interference control, and that affects new technology that could be used for video and broadband distribution within the home.

The GPS system was designed and built for the military, but civilian uses have begun to dominate. In the past, the military had a concern that, in an armed conflict, not only allies but also ...

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