February 27, 2008

The funda of GPS

Hello friends,in this blog i want to give you some information regarding GPS(Global Positioning System).Actually,GPS is a technology which is used to find the location of its user.In the begining it intended only for the military purpose,but in the begining of 1980 it is available for the civilian use.GPS technology was developed by the Department of Defense of U.S. government.In technical words we can say that GPS is a fully functional Global Navigation Satellite System(GNSS) which is a network of 24 satellites placed in earth’s orbit.GPS is totally envirnoment or condition independent.It can works in any weather ,anywhere in the world and 24 hours a day.Actually GPS satellite works due to the centripretal force between GPS satellite and earth due to which it revolves around the earth twice in a day in very precise orbit and transmit signal information to earth.
At earth GPS receiver receives these signal and uses triangulation to calculate user’s exact location.GPS is launched because to figure out where you are and where you’re going is probably one of oldest pastimes.The user’s location is calculated such that,the time difference between the transmitter send the signal and the receiver received the signal is calculated,and then with the help of other satellites the receiver can determine the user’s position and display it on the unit’s electronic map.In this way the position of any body can be calculated.Since,the era of GPS is started and in the next few years GPS will be at its top.

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