Indian Regional Satellite Navigation System
It is a navigation system means a system which provides mainly position and time details; for example GPS.
GPS is developed by US government. Anybody can freely use it provided they have GPS receivers.!!!!!
Usually minimum 4 satellites should be available to identify the position accurately.
Why IRNSS when GPS was freely available?
Because GPS is controlled by USA. During Kargil war India felt the heat of this. Lesson learnt never trust others!!
So India came up with a plan to launch 7 satellites to the SPACE to have our own positioning system(covering only INDIA). ISRO is working on it. By 2016 we will have 7.
I think we have launched around 3 of these satellites. J
.eguru
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