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Letstrak Real time GPS Vehicle Tracking Systems Technology Articles | June 1 http://www.cheapirmaxplustnshoes.com/ , 2016

Real-time vehicle tracking means that data collected by the GPS tracker in a vehicle is transmitted so that it can be viewed in real time, or live. They are also known as active tracking devices, as opposed to passive trackers which store their data internally to be retrieved at a later time by connecting the device to a computer.



How does GPS vehicle tracking work?


In their simplest form cheap air max plus , GPS tracking devices are known a passive GPS trackers. These trackers use GPS receivers to calculate their position on the globe using the satellite-based GPS (Global Positioning System). They then record this information on an SD card or on internal storage, together with a timestamp. In order to access the data, the device needs to be recovered from vehicle and connected to a computer to download and view the data.


Real-time trackers or active GPS trackers differ from passive ones in that they can connect to the mobile data network (via GPRS) and upload their data to a web server. The GPRS network is the same used for 2G and 3G mobile data communications. This data can then be viewed by the dispatcher or fleet manager via logging in to a web interface or mobile app.


Subscription fees and Data Fees


If you have purchased a passive tracker cheap air max tn , you can use it without any additional charges, but real time trackers will always incur some kind of subscription or data usage fee. Beware of deals that claim to have no monthly fee. Real time vehicle tracking devices use the mobile GPRS network in much the same way that mobile phones do – so a SIM card and an agreement with a mobile network provider is needed for each device.


Network changes are based both on the amount of data transmitted and the frequency of the connections. Some vehicle tracking solutions will update as often as once every 10 seconds, while others update data once few minutes cheap air max 95 , or even once an hour. The update frequency will have a bearing on the subscription and data costs, but more frequent data updated will give you more accurate data