Minggu, 08 April 2012

Active and Passive GPS Tracking Devices

By Vivek Paliwal Presently, many people have GPS vehicle tracking devices fixed in their vehicles. A GPS (Global Positioning System) is actually a sat nav system which locates the location (latitude as well as longitude) of a GPS device on the earth by means of approximately 24 GPS satellites which are consistently orbiting the globe. Each one satellite revolving around the planet transmits

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