Second generation satellite navigation system in the United States.4G GPS Tracker for vehicles manufacturer

source:truck tracking webfleet solutions release time:2023-08-19 Hits: Popular:realtime gps tracker online

　　At present, the global positioning system is the second generation satellite navigation system in the United States, and users only need to have a GPS terminal to use this service without additional payment. GPS signals are divided into two categories: civilian standard positioning service (SPS) and military precise positioning service (PPS). Due to the fact that SPS can be used without any authorization, the United States was originally concerned that hostile countries or organizations would use SPS to launch attacks on the United States, so it artificially added errors (i.e. SA policy, Selective Availability) to civilian signals to reduce their accuracy, resulting in a final positioning accuracy of approximately 100 meters; The accuracy of military regulations is below ten meters. After 2000, the Clinton administration decided to eliminate interference with civilian signals. Therefore, civil GPS can now achieve positioning accuracy of about ten meters.

　　The GPS system is not a GPS navigator, and most people associate it with the GPS navigator first. The GPS navigator is only a part of the application of the GPS system. The GPS system is the best navigation and positioning system to date. With its continuous improvement and improvement of hardware and software, its application fields are constantly expanding, and it has now spread to various departments of the national economy and gradually penetrated into people's daily lives.

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