Design of GPS Vehicle Satellite Positioning Simulation System

　　At present, in-vehicle technology is very mature. It is widely used in anti-theft tracking of private cars, scheduling control of logistics vehicles, electric security for taxis, intelligent electronic stop signs for buses, etc., and its price has also become very high. Cheap. It can be bought for a few hundred yuan in the market [1]. Its core technology is GPS, and the electronic ground is the soul of GPS. Only through it can the positioning of the vehicle be realized. After the vehicle position is determined, the data is sent to a third party through wireless transmission, so that the vehicle positioning can be realized. According to With this technology, we have established a model that can simulate the operation of the vehicle. It can determine the position of the vehicle through the GPS positioning system, send the vehicle's position information to the control center through the wireless transmission system, and send control commands when there is a control center. For the vehicle, let the vehicle reach the designated position, that is, to establish a model of the "driverless" vehicle system through GPS/GSM. Of course, this model is built on the highway. When the driver drives on the highway, it can be Send an instruction to the workstation through the control button. After the workstation confirms it, it informs the driver. After that, the vehicle enters the "unmanned" state. The driving of the vehicle is determined by the control center. When it reaches the highway exit, the control center will inform the driver. The driving right of the car is returned to the user, and in order to prevent accidents, the user can also interrupt the connection with the control center at any time.

　　This system simulates this model, using GSM as the data transmission medium, using the PC as the control center, replacing the vehicle with a car, and simulating the operation of the vehicle in the campus. It is sent to the PC, processed by the PC, the position of the car on the map is displayed, and then the PC is sending out the command, and the command is sent to the car through GSM, and the car is executing the command.

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GPS and National Security