gps vehicle tracker.Automotive GPS positioning software and global positioning system satellites

　　There are two common client software products available to enterprise users, one is the C/S version of the client vehicle monitoring system, and the other is the B/S version of the client vehicle monitoring system.

　　Adopting a C/S version client system requires user units to configure hardware environments such as database servers, application servers, monitoring workstations, and corresponding software working environments; Adopting the B/S version system only requires a PC that can access the internet, without the need to add other devices, and the response speed is slightly slower.

　　The GPS platform adopts a combination of C/S and B/S modes to provide users with access, while also providing mobile app clients with the following characteristics:

　　1. Easy to use, easy to operate, and can be accessed anytime, anywhere.

　　2. No need to invest in equipment, just a computer or phone with internet access to use.

　　3. Using the online map service provided by our company, we can use national electronic maps and maintain and update data in a timely manner.

　　4. A telecommunications level operational support platform to ensure system stability and user data security.

　　The Global Positioning System (GPS) is a new generation of space satellite navigation and positioning system jointly developed by the United States Army, Navy, and Air Force in the 1970s. It has the characteristics of high accuracy, all-weather, high efficiency, multifunctional, and widely used.

　　The principle of GPS positioning is that 24 GPS satellites orbit the Earth at an altitude of 12000 kilometers above the ground in a 12 hour cycle, allowing for simultaneous observation of more than 4 satellites at any point on the ground at any time. Due to the precise positioning of satellites, in GPS observations, we can obtain the distance from the satellite to the receiver. Using the distance formula in three-dimensional coordinates and using three satellites, we can form three equations to solve the positions of observation points (X, Y, Z). Considering the error between the satellite clock and the receiver clock, there are actually four unknowns, X, Y, Z, and clock difference. Therefore, a fourth satellite needs to be introduced to form four equations for solving, in order to obtain the longitude, latitude, and elevation of the observation point. The GPS positioning error is generally within 15 meters.

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