Vehicle tracking devices combine the use of automatic vehicle location in individual vehicles with software that collects these fleet data for a comprehensive picture of vehicle locations.
Modern vehicle tracking devices commonly use GPS technology for locating the vehicle but other types of vehicle location can also be used. Information about vehicle can be viewed on electronic maps via the Internet or Specialized Software.
Vehicle tracking devices are classified as “Passive and Active.”
Passive devices store GPS speed, heading and location such as key on or off, door open or closed. Once the vehicle returns to a predetermined point, the system is removed and the data collected to computer for evaluation.
Active devices also collect the same information but usually transmit the data in near-real-time via cellular or satellite networks to a computer or data center for evaluation.
Most vehicle tracking devices combine both active and passive tracking abilities. Whenever cellular network is avertable and a tracking device is connected it transmits data to a server, when a network is not available the device stores data in internal memory and will transmit stored data to the server later when the network becomes available again.
A GPS tracking system uses the Global Navigation Satellite System network. This network incorporates a range of satellites that use microwave signal s that are transmitted to GPS devices to give information on location, vehicle speed, time and direction.
GPS provides special satellite signals, which are processed by a receiver. These GPS receivers not only track the exact location but can also compute velocity and time. The position can even be computed in three-dimensional views with the help of four GPS satellite signals. The space segment of the Global Positioning Systems consists of 27 Earth-orbiting GPS satellites. There are 24 operational and 3 extra ( in case one fails) Satellites that moves around the earth each 12 hours and send radio signals from space that are received by the GPS receiver.
The control of the Positioning System consists of different tracking stations that are located across the globe. These monitoring stations help in tracking signals from the GPS Satellites that are continuously orbiting the earth.
GPS tracking system is a way of monitoring the behavior of employees as they carry out their work and of streamlining interval process and procedures for delivery fleets.
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