Smartphones are very popular in modern society. Many friends' mobile phones also carry various electronic maps. Picking up electronic maps on mobile phones can quickly find the purpose we want or can be navigated by routes. In the function module of route navigation, when we set a successful destination, the electronic map will provide us with the optimized forward route. When we follow this forward route, we will find that when the mobile phone moves, the icon of the electronic map will also move randomly, and the icon is updated very fast, especially when we are sitting in the car.

　　When using a car GPS positioner, we will use the corresponding vehicle positioning system APP to move the terminal. It is not difficult to see that attentive friends are difficult to see that although they are all apps, there is a large gap in tracking and positioning systems and positioning systems of mobile phone electronic maps. The movement and update speed of the GPS positioning system icon are very slow. Mobile phone electronic maps are very fast.

　　The main reason is that the use scenarios of these two products are different. Let's take the car GPS positioner, for example, its requirements for real -time positioning are not harsh, because he does not involve real -time navigation, and the number of vehicles on the system may be more than one, which can be as high as 1 million. The composite of this network, coupled with the fast -updated tracking positioning, has high requirements for the total width and system configuration of the network, which is unbearable by the general system architecture.

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