Envisaging a more active participation from domestic industry in India's space programme, the Indian Space Research Organisation (ISRO) today said it looked forward to industry-built and assembled launch vehicles in three to four years.

"About three to four years down the line, our target is to see industry-built, assembled and launched PSLV," ISRO Chairman A S Kiran Kumar said. Addressing the media after the successful launch of ASTROSAT, the country's first observatory satellite, and six foreign satellites onboard PSLV-C30 from here, he pointed to the participation of about 150 companies in the Polar Satellite Launch Vehicle programme. Responding to a query on the SAARC satellite proposed by Prime Minister Narendra Modi for member countries, Kumar said Sri Lanka had given its acceptance on frequency while the space agency was awaiting the same from others.

Plans were afoot to launch the satellite by the end of 2016, with both exclusive transponders and shared ones to be allotted to the members of the South Asian Association of Regional Cooperation (SAARC). ISRO's projects in the coming months include a commercial launch carrying six Singapore satellites, a couple of navigational satellites and GSAT-15, Kumar said.

When asked about today's launch of four satellites from the US, which had in the past imposed sanctions on the country, he said the "world doesn't remain stagnant". "The Indo-US relationship was growing even as the two were involved in the NISAR satellite programme", he said, adding Chandrayaan-I had US payloads. Countries were also collaborating with the space programme due to financial constraints, he said. Asked about the invitation to ISRO to be part of the International Space Station, he said no decision has been taken so far. "With launches like Mars Orbiter Mission and ASTROSAT, ISRO has managed to reach out to institutions and youth", he said.