How accurate is GPS positioning?

source:truck tracking webfleet solutions release time:2022-10-26 Hits: Popular:realtime gps tracker online

　　GPS requires three satellites for accurate positioning, but since satellite clock frequencies are different from those of the receiver (satellites use rubidium and cesium clocks, which are highly accurate, while GPS receivers have very low precision clocks), at least four satellites are needed for positioning.

　　GPS is the United States military purpose and the establishment of the current application is divided into two aspects: military and civilian, purely from the point of view of technology, due to the progress of technology, the accuracy of GPS can reach centimeters or even higher. The current U.S. military GPS can reach the centimeter scale.

　　In the civil aspect, the positioning accuracy is greatly improved by GPS differential technology. In the case of no interference, the positioning accuracy of most civilian GPS satellite positioning devices is about 2.93m ~ 29.3m.

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