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Global Positioning System - Wikipedia, the free encyclopedia |
 | | The satellite constellation is managed by the 50th Space Wing.Although the cost of maintaining the system is approximately US$400 million per year, including the replacement of ageing satellites, GPS is available for free use in civilian applications as a public good. |
 | | In 1992, the 2d Space Operations Squadron, which originally managed the system, was inactivated and replaced by the 50th Space Wing. |
 | | One GPS developer, Roger L. Easton, received the National Medal of Technology on February 13, 2006 at the White House. |
| en.wikipedia.org /wiki/GPS (6809 words) |
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