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- Home | GPS. gov
The Global Positioning System (GPS) is an essential element of a global information infrastructure The free, open, and dependable nature of GPS has led to the development of hundreds of applications affecting every aspect of modern life
- GPS Accuracy | GPS. gov
How accurate is GPS for speed measurement? As with positioning, the speed accuracy of GPS depends on many factors The government provides the GPS signal in space with a global average user range rate error (URRE) of ≤0 006 m sec over any 3-second interval, with 95% probability
- DOT Response to Volpe’s Vulnerability Assessment - GPS: The Global . . .
• Besides backup systems, user training for awareness of when to switch to backup, etc , are important SPOOFING – SPAWAR Meeting Reinforces its Importance as a Potential Threat, Along with RFI and Growing Dependence on GPS Meaconing is the Delay and Re-broadcast of the GPS signal
- Global Positioning System (GPS) Standard Positioning Service (SPS . . .
Since GPS initial operational capability (IOC) was first declared in 1993, actual GPS performance has continuously met and exceeded minimum performance levels specified in the SPS PS and users can generally expect improved performance over the minimum levels described here
- Interface Control Documents (ICDs) Interface Specifications (ISs)
Information on the civil GPS signals and codes broadcast at the L1, L2, and L5 frequencies The communication boundaries between the Global Positioning System and other systems, as well as within the GPS itself, are known as interfaces
- Space Segment | GPS. gov
The GPS space segment consists of a constellation of satellites transmitting radio signals to users The United States is committed to maintaining the availability of at least 24 operational GPS satellites, 95% of the time
- Systems | GPS. gov
GPS is operated and maintained by the U S Space Force GPS gov is maintained by the National Coordination Office for Space-Based Positioning, Navigation, and Timing
- GPS. gov: Fiscal Year 2017 Program Funding
Fiscal Year 2017 funding levels for the Global Positioning System (GPS) program and GPS augmentations
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