before_revision:  Global Positioning System (GPS) satellites broadcast microwave signals to enable GPS receivers on or near the Earth's surface to determine locationand time, and to derive velocity . The system is operated by the U.S. Department of Defense (DoD) for use by both the military and the general public.
after_revision: GPS signals are broadcast by Global Positioning System satellites to enable satellite navigation. Receivers on or near the Earth's surface can determine location, time, and velocity using this information . The system is operated by the U.S. Department of Defense (DoD) for use by both the military and the general public.
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edit_actions: GPS signals are broadcast by
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edit_actions: (GPS) satellites broadcast microwave signals to enable GPS receivers
edit_actions: satellites to enable satellite navigation. Receivers
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edit_actions: to determine locationand
edit_actions: can determine location,
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edit_actions: to derive velocity
edit_actions: velocity using this information
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