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Is GPS and GPRS the same thing.gps vehicle tracker

source:Industry News release time:2023-10-10 Hits:     Popular:realtime gps tracker online

  

  GPS is the abbreviation for Global Positioning System in English. GPS began as a project by the US military in 1958

  GPRS (General Packet Radio Service) is the abbreviation of General Packet Radio Service technology. It is a mobile data service available to GSM mobile phone users and belongs to the data transmission technology in the second generation of mobile communication.

  The transmission of location information from a moving vehicle to the center must rely on a wireless transmission system. Currently, the GSM system has the widest coverage, so most vehicle positioning terminals in the market use GSM communication modules as the carrier for data transmission, utilizing the short message function provided by GSM to transmit the vehicle's location data to the control center. However, in practical use, it has been found that there are two main drawbacks to using short messages to transmit data:

  (1) Slow transmission speed. In general, directly connecting to the short message center by extending the short message entity can improve the speed of short message transmission. The actual test results show that it takes 3-5 seconds for the vehicle's position information to be sent from the onboard device to the center normally, which cannot be achieved even when the short message center is busy. Compared to vehicles with a normal speed of 60-80 km/h, the actual error of the data received by the center may reach 80-120 meters.

  (2) High transmission costs. The fee for short messages is charged based on the number of messages sent, usually 0.1 yuan per message. For large business volumes, there may be appropriate discounts, but even so, the fee cannot meet the needs of monitoring vehicles at any time in practical applications.

  For general unit vehicles using GPS systems for vehicle management, the above two drawbacks may not have a significant impact. However, for important vehicles such as bank cash carriers and police patrol vehicles, accurate location information is required at critical moments to accurately locate the vehicle and take necessary measures. Using GPRS to transmit data does not have these drawbacks. Once the GPRS communication module is connected, it will always be online, and the data transmission speed when online is less than 1 second. This means that the location information of the vehicle can be displayed on the electronic map within 1 second after being sent. Moreover, GPRS generally adopts a monthly subscription or billing based on traffic, and the cost of data transmission is much lower than that of SMS.


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