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How does GPS work?

One of the unique gifts of modern technology is GPS (Global Positioning System). Nowadays, anyone who has a smartphone with GPS can travel around the world without any help and all this is possible for GPS technology.

GPS (Global Positioning System) was developed in 1955. Since then, over time, its technology has improved in many ways.

You have a mobile in your hand and you can get all the information including your location in a blink of an eye but all these things are possible for the satellites above your head.

GPS takes the help of satellite technology to know your location. There are currently 30 (More than 30 according to NASA) satellites orbiting the Earth for GPS work, of which 27 are currently in operation and the remaining 4 (appx.) Are for future backup. If any of those 30 satellites are malfunctioned, then those 4 satellites will be used.

The three parts of GPS are:

1. Satellite
2. Ground Station
3. Receiver

Image: GPS communication (Image source: NASA)

The mobile you are using to know your location acts as a receiver. To find out your location, first connect your mobile to at least 4 satellites above the receiver and exchange the microwave signal. Then the distance of those specific satellites with your mobile is found out through the traveling time of that signal. The location of your mobile is then determined by the location of the satellite. In this case, the more your mobile can connect to the satellite, the more accurate your location will be.

You can find out your location with a single click, but tell me how hard it is to find this location.
Post: Rohit Nandi

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