What is GPS?

In the orbit there are 24 satellites revolving around the earth placed by US and other european countries.at any point of time atleast 12 satelites are accessible from india.the satellite calculates a position in the global map by latiude and logitude. using this info on mapping software you can identify any desired location.used for vehicle and asset tracking, tracking parcels and cargo
tracking location based destinations so that one can never miss the way