http://www.wooxie.com/feeds/ Wed, 12 Jun 2013 07:16:26 -0400 en Global Positioning System, GPS in short, is a satellite assisted navigation system providing location and time information anywhere on the Earth. GPS navigation is possible only when the GPS system installed in the vehicle has unobstructed line of sight to a minimum of four GPS satellites in the space. The facility is maintained by US government and is free of cost.

The position of the vehicle fitted with GPS is accurately calculated by the signals sent by the GPS satellites. Each of these satellites independently transmits signals continuously about the time the message was sent and the position http://www.wooxie.com/blog/5066/gps-navigation-how-the-system-functions