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Global Positioning System (GPS) |
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| The Navstar Global Positioning System (GPS) is a network of 24 satellites in orbit around the earth that provides users with information about their position and movement. A GPS receiver computes position information by comparing the time it takes for radar signals from three or four different GPS satellites to reach the receiver. | ||||||
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| NASA | ||||||
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| Appears in these articles: | ||||||
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| Geodesy; Radar; Artificial Satellite; Space Exploration; Global Positioning System | ||||||
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