ISRO is launching two earth observation satellites (EOS) naming GISAT-1 and RISAT-1A and these are EOS 3 and EOS 4 respectively.
GISAT-1 is going to be the world’s most powerful Earth Observation Satellite which will secure the borders on a Real-time basis.
The GISAT-1 (Geo Imaging Satellite) will be India’s first Indigenous earth observation satellite that is going to be placed in geostationary orbit. This satellite will move with the rotation of the earth, so will look stationary
Its aim is to secure India’s borders in real-time.