In the old times, mariners utilized the position of stars, sun, and moon for the navigation. Nowadays we are subject to GPS innovation to discover location.Things are much, much simpler today. Now we can see GPS framework in little gadgets like a watch, mobile, car, GPS tracker, however, do you know how it works. Have you regularly think how it discovers current location. In this article, we will learn about the GLOBAL POSITIONING SYSTEM in detail. 

The GLOBAL POSITIONING SYSTEM innovation is an overall radio-route framework shaped from a heavenly body of 24 operational Earth-circling satellites. GPS is otherwise called the NAVSTAR (Navigation System for Timing and Ranging). The U.S. military created and executed this satellite system as a military route framework, however, amid 1980, the administration makes to accessible for others.


Each of these satellites circles the globe at around 12,000 miles (19,300 km), making two complete revolutions each day. The circles are composed so that, there are 4 or more satellites noticeable in the sky whenever, anyplace from the earth. 

GLOBAL POSITIONING SYSTEM is comprised of three sections: satellites, ground stations, and receivers.The GPS takes radio waves from every GPS satellite. By utilizing this signal the receiver figures your position on earth in view of your separation from three satellites, however, this is a 2D position which is in exact position. The GPS receiver needs 4 satellites to work out your position in 3D for the more accurate position.

GLOBAL POSITIONING SYSTEM navigators operation is based on a simple mathematical principle called trilateration.Trilateration is a more complex version of triangulation, its literal meaning is positioning from three distances.This is used to determine the user position, speed, and elevation. GPS navigators constantly receive and analyze radio signals from 3 GPS satellites, signals of each satellite produce a circle of possibility where the point being referred to(gadget area) exists. At the point when each of these circles is overlapped together, the last result is an exact calculation of position.




  • GPS route framework is a development innovation for military course structure. 
  • A gadget containing GPS is integrated with maps and areas from around the globe. Cell phones and tablet PCs can pinpoint an area and give an exact direction of the route from Point A to Point B. 
  • The best-preferred standpoint of this innovation is, that it is without given of expense.
  • The most attractive and important feature of this framework is its 100% coverage on the planet 
  • It helps to monitor traffic and re-direct you to a faster, more efficient route.
  • It is also useful in determining the environment’s water substance to enhancing the exactness of climate gauges. 



  • The GPS signals are not exactly all time because of a few obstructions to the signals, for example, buildings, trees and in some cases of bad atmospheric conditions. 
  • In the case of you are using GPS on a battery worked gadget, there might be a battery disappointment and you may require an outer force supply which is not generally available. 
  • It may cause security issues in case of-of cellular devices being tracked by other cellular devices.
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