Design and types of GPS tracking units

A GPS tracking unit is a device which uses global positioning systems in determining the specific position or location of a person, vehicle or any other asset. The device is usually attached to the person or vehicle to be tracked and the position is recorded at determined intervals.

The recorded data is then stored in the unit or is transmitted to a central location or to a computer that is connected to the internet using GPRS of Text Messages, satellite modem or radio. This enables you to see the location of whatever thing you are tracking either in real time or as you analyze the track at a later date.

GPS tracking unit design

Data pushers also contain GPRS or GSM modems which transmit information to a centralized computer either through SMS or GPRS in the form of IP packets.

Types of GPS tracking units

Data loggers

A majority of digital cameras save the exact time a photo was shot. If the camera's clock used the GPS as its source or time then the time may be correlated with GPS log data hence giving an accurate location. This may be added to the Exif metadata in the picture's file.

In various cases of private investigations data loggers may be used in tracking a targeted vehicle. The investigator has to follow the target closely and have a data backup source.

Data pushers

A GPS navigation device is put side by side with a mobile phone in one box, using one battery. The phone sends an SMS or GPRS at regular intervals containing data from the receiver. Most GPS trackers in the 21st Century provide data push technology which enables sophisticated tracking in business premises, organizations and commercial fleets.

Data pullers

Data pullers are now being used in the form of devices with GPS receivers and cell phones that when they receive an SMS they reply with a message containing their location. You can read more about the GPS Units at https://gurtam.com/en