How does a gps trailing tracking device work?
A GPS trailing tracking system is a device that finds the exact
location of something (i.e: phone, vehicle, ect.) It works by
providing satellite signals which are processed by a receiver.
These GPS receivers track the exact location of an object.
reference:
http://www.eetimes.com/design/communications-design/4210115/How-does-a-GPS-tracking-system-work-/