India’s fifth navigation satellite IRNSS-1E successfully put into orbit

January 2016, Science and Technology

In Brief:


Indian Space Research Organisation (Isro) successfully put the IRNSS-1E in orbit using Polar Satellite Launch Vehicle PSLV-31. The 1,425 kg satellite was the fifth to be launched as part of the Indian Regional Navigation Satellite System (IRNSS) which will consist of a constellation of seven satellites.
After the PSLV-C31 lift-off from the Satish Dhawan Space Centre in Sriharikota and a flight of about 18 minutes 43 seconds, IRNSS-1E Satellite was injected to an elliptical orbit and successfully separated from the PSLV fourth stage. Once in orbit, the solar panels of IRNSS-1E were deployed automatically so that it can be controlled by Isro’s Master Control Facility at Hassan, Karnataka.

The four satellites already launched include IRNSS-1A on July 1, 2013, IRNSS-1B on April 4, 2014, IRNSS-1C on October 16, 2014, IRNSS-1D on March 28, 2015. 
ISRO scientists plan to put all the seven navigation satellites in to the orbit by March 2016. The mission life of IRNSS-1E is 12 years.

IRNSS -1E carries two types of payloads – navigation payload and ranging payload. The navigation payload of IRNSS-1E will transmit navigation service signals to the users. This payload will be operating in L5-band and S-band. The ranging payload of IRNSS-1E consists of a C-band transponder which facilitates accurate determination of the range of the satellite. IRNSS-1E also carries Corner Cube Retro Reflectors for laser ranging.

What is IRNSS?
IRNSS is an independent regional navigation satellite system designed to provide position information in the Indian region and 1500 km around the Indian mainland.  IRNSS would provide two types of services, namely Standard Positioning Services available to all users and Restricted Services provided to authorised users.
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