What is GPS system and how is it used

Introductions

 If you go to an unknown place, then you must have used GPS to track your location and to reach the destination, but have you ever wondered what happens in GPS that can track your location in a few seconds? In this post I will tell you what is a GPS system and how does it work, what is a GPS system and how is it used.

what is gps system

The full name of GPS is Global Positioning System. GPS is generally a Satellite Based Radio Navigation System which is used to know the location like if you are stuck in any problem then you can get help through Emergency Number. Which are being presenting in all mobiles, phones nowaday.

History of GPS

GPS was first launched by the US government as a project in 1973 for Military Purpose, the first satellite under this project was launched in 1978, at that time GPS was used only by the US military. Used to use this, with the help of this, the Americans military use to shoots down enemnies countries by aircraft and their military by target  them accurately.

After this, in 1983, a flight which was going towards Russia, at that time there was no GPS system in the airplane because GPS was made only for the American military. Went into an area where he should not have gone, meaning he had gone to the restricted area of ​​Russia, which was destroyed by Russia, after this incident,  then the US President Ronald Regan decide that now GPS should be used all overs the world. Will be publicly provided in But at that time, there was a need for about 24 satellites for the whole world, so to make GPS available to the common peoples, the first satellites was  launched by the US  on 14 February 1989 and the 24th satellites was launched in 1994, in the years 1995. For the first's time GPS was made open to the general publics, but at that time its accuracy and quality were not so perfects.

By the year 2000, the US government had made many efforts to make GPS even better, as a result of which today GPS has started working properly all over the world.

How does GPS work

There is a GPS receiver in your smartphone or any GPS unit that receives the signals sent by the satellite. You must know that the satellite moving in the interval of the earth sends the signal after a time, the signal in these satellites and its Atomic clock is used for the correct calculation of time in these satellites, it is such a clock that can tell the correct time for millions of years.

Chances of malfunctioning of these clocks are very less, when the signals of these satellites come in contact with a GPS receiver, the receiver reads those signals, in this the receivers also find out that the satellites from which the signals was sent. At what distances is your devices located, if your devices is successfully in receiving signals from four or more satellites, then you gets to knows your current location.

A normal GPS device that has not been used for a long time also takes 15 to 20 minutes to show its location, but if you use GPS in your smartphones, then you will knows your locations in a few second. This is because A GPS or Assistant GPS is used in the mobiles phones, it is also a form of GPS but it uses the Internet to locates the location quickly.