The 436-kg EMISAT and other satellites would be launched from the Satish Dhawan Space Centre in Sriharikota.
India scripted history by successfully launching EMISAT, a military satellite, and 28 foreign nano satellites on-board its polar rocket from Sriharikota on Monday, in a complex mission which marked many a first for Indian Space Research Organisation.
The countdown began at 6.27 am for the launch on board ISRO's third generation workhorse Polar Satellite Launch Vehicle, in its 47th flight, ISRO said.
The RISAT-2B would replace the RISAT-2, which has been actively used by India to monitor activities in camps across the border in Pakistan to thwart infiltration bids by terrorists.
The launch marks a significant milestone for the space agency as it is the 50th flight of PSLV and the 75th vehicle mission from Sriharikota. The 628 kg satellite is meant for applications in various fields like agriculture, forestry and disaster management support. It would also serve military purposes.
Out of its 47 operational satellites, India currently has six to eight satellites which are used entirely for military purposes.