India launched fourth navigation satellite

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New Delhi: Taking a giant leap in the space and communication technology India launched the navigation satellite IRNSS-1D on Saturday from Sriharikota onboard workhorse PSLV-C27 that would pave the way for the country’s own navigation system on par with the GPS of US.The 59.5-hour countdown for the launch scheduled at 5.19 pm from the Satish Dhawan Space Centre at Sriharikota, about 90 km from Chennai, progressed smoothly, Indian Space Research Organisation said on Friday.

The launch originally scheduled for March 9 was deferred after an anomaly was found in a telemetry transmitter.

IRNSS-1D is the fourth in the series of seven satellites, planned by ISRO to put in place the Indian Regional Navigation Satellite System (IRNSS), currently under development.

The IRNSS system, targeted to be completed by this year at a total cost of Rs. 1,420 crore, will be targeted at South Asia and is designed to provide accurate position information services to users in the country as well as the region extending up to 1,500 km from its boundary.

Similar to the previous three launches, ISRO would use the “XL” version of the Polar Satellite Launch Vehicle (PSLV), its most reliable rocket, for IRNSS-1D which will have a mission life of 10 years.

The system would provide two types of services-Standard Positioning Service, which is provided to all the users, and Restricted Service that is an encrypted service provided only to authorised users.