KOCHI: After the success of PSLV-C44, preparations are on at Isro centres for the PSLV-C45 to launch the electronic intelligence satellite EMISAT with 30 commercial satellites in March. Ahead of that, Isro plans to launch the communication satellite GSAT-31 on February 6 from French Guiana. The Chandrayaan-2 launch is now slated for April.“GSAT-31 is a high-throughput communication satellite planned for launch from Arianespace, French Guiana on Feb 6. It is for high speed internet, telecommunication and broadcasting and it will replace the communication satellite INSAT-4CR which is fading out, “Isro chairman K Sivan told TOI. On the next PSLV mission lined up, he said, PSLV- C45 is planned for launch of advanced electronic intelligence satellite EMISAT in March.Following that, PSLV-C46 mission is planned for launch of the earth observation satellite Cartosat-3 with high resolution cameras and optical devices for effective imaging, It will be followed by the PSLV-C47 mission for launch of RISAT 2BR 1, a Radar Imaging Satellite for reconnaissance and strategic surveillance. Now, the dates of these launches are yet to be finalised, Vikram Sarabhai Space Centre (VSSC) scientists said.The launch vehicle GSLV-MK III will be required for launch of GSAT-31, a 2600kg satellite. But, GSLV-MK III will be set for the launch of Chandrayaan-2, the second moon mission in April. Chandrayaan-2 will be a totally indigenous complex mission with an Orbiter, Lander and Rover, VSSC scientists said.After reaching the 100km lunar orbit, the Lander housing the Rover will separate from the Orbiter. After soft landing, the lander will deploy the six-wheeled rover which will move around the landing site as decided by the ground commands. The instruments on the rover will observe the lunar surface and send back data, which will be useful for analysis of the lunar soil. Weighing around 3290kg, Chandrayaan-2 would orbit around the moon and the payloads will collect scientific information on lunar topography, elements, minerals, lunar exosphere and for traces of water-ice and organic compounds.