GPRS wireless communication network or CDMA wireless communication network can be used, and SMS can also be used for data transmission. The modern mainstream is GPRS transmission mode.

　　Functions and characteristics of GPS monitoring system

　　1. GPS monitoring system function

　　(1) Real time monitoring

　　After the monitoring center sends an immediate command, the GPS positioning terminal will upload the location information (including longitude, latitude, azimuth, speed, number of satellites, etc.) and status information of vehicles, people or pets in a timely manner.

　　(2) Remote tracing

　　The monitoring center can track and set the GPS positioning terminal regularly on the monitoring software, and upload the position information and status information at a fixed time. Once the setting is successful, the GPS terminal will

　　The issued instruction requests to upload the information required by the monitoring center in a timely manner.

　　(3) Emergency help

　　In case of special circumstances, the driver or the person wearing the GPS terminal can call for help from the monitoring center through the emergency call button. Once the monitoring center receives the rescue command, the monitoring center staff can provide

　　Assist or notify the police for assistance.

　　(4) Track playback

　　In the history track playback, the system can view the position and route of vehicles, people or pets on a certain day in the history information. The status of the vehicle at that time;

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GPS Processor (GPSPU)

This section describes GPS working modes