1. Positioning accuracy: The positioning accuracy of the Beidou positioner depends mainly on the accuracy and satellite signal strength of the Beidou positioning system. At present, the positioning accuracy of the Beidou positioning system is available. The accuracy mainly depends on the accuracy and signal of the GPS positioner system. The GPS positioning accuracy is 10-50 meters. Generally, the positioning company will say that the accuracy is maintained at about 10 meters, but there is a certain error affected by the signal. This is normal. This is a thing that no one can be guaranteed. The accuracy of the GPS positioner of Hezhisucho is maintained at about 10 meters. It is still maintained from the positioning module, chip, circuit and other materials to maintain it!

　　2. Number of users: Because Beidou uses active two -way ranging system, the positioner and Beidou satellite must not only accept the inquiry information of the ground control center, but also like satellite emission response information. Therefore, the number of Beidou users may be limited; the GPS positioning system uses a one -way ranging system, and the positioner can achieve positioning only receiving satellite signal machines. Therefore, the number of users of the GPS positioning system can be said to be infinite, but there is no need to worry about the restrictions of Beidou's users. Since the Beidou system is born for the "sniper" GPS system, it is developed with the development of Beidou. These problems will not be a problem!

　　3. Cover: Beidou positioner uses Beidou for positioning. Beidou is a satellite positioning system developed by China. Its coverage is expanded from the original "China" to the "entire Southeast Asia" field; GPS is an independent satellite positioning system in the United States, and its coverage is covered with the world in the early years.

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