3/5/2023 0 Comments Naval action map reality![]() ![]() Naval Observatory (USNO) via the GPS signal in space with a time transfer accuracy relative to UTC(USNO) of ≤30 nanoseconds (billionths of a second), 95% of the time. The government distributes UTC as maintained by the U.S. GPS time transfer is a common method for synchronizing clocks and networks to Coordinated Universal Time (UTC). This measure must be combined with other factors outside the government's control, including satellite geometry, signal blockage, atmospheric conditions, and receiver design features/quality, to calculate a particular receiver's speed accuracy. ≤0.006 m/sec over any 3-second interval, with 95% probability. The government provides the GPS signal in space with a global average user range rate error (URRE) of How accurate is GPS for speed measurement?Īs with positioning, the speed accuracy of GPS depends on many factors. The ongoing GPS modernization program will further improve accuracy for civilian and military users. User accuracy refers to how close the device's calculated position is from the truth, expressed as a radius. To calculate its position, a GPS device measures its distance (range) from multiple GPS satellites. ![]() Please report them to the responsible parties using the links in our Address, Route, and Map Problems section.įor help with GPS problems that are not mapping errors, please visit our GPS Service Outages & Status Reports page. government cannot correct mapping errors in consumer devices.
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