IRNSS

New Delhi: Indian Space Research Organisation (ISRO) scientists have announced that the first of seven satellites that will form IRNSS, is expected to be launched by December 2012.

Pradeep V Khekale, a senior scientist with ISRO’s Space Applications Centre (SAC) in Ahmedabad said that the IRNSS will be composed of seven geostationary satellites to watch over the country from 36,000 km above the earth’s surface—two satellites each would be positioned in the north and south, with three in the middle. Khekale is the programme manager for GAGAN, or GPS-aided Geo Augmented Navigation, a system that improves GPS accuracy for users in India, and is involved in developing the applications for IRNSS.

“The first satellite launch is expected within a year, and all seven satellites for IRNSS are expected to be launched within three years,” said Chirag Dewan, a senior scientist at SAC.

The payloads for the IRNSS would weigh approximately 2,000 kilograms, and would need Geosynchronous Satellite Launch Vehicles, or GSLVs, to launch them. Khekale added that the two-frequency INRSS would be more accurate than the single frequency GPS.

“IRNSS is generating a lot of interest, excitement and focus at the SAC now, especially after the successful launch of the RISAT-1 just a few weeks ago,” said Shailendra Singh, a Radio Frequency engineer at SAC who was part of the RISAT mission, the payload for which was developed here.

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Source: http://www.indianexpress.com/news/scientists-excited-about-indias-own-gps/951413/