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India successfully launched its fifth navigation satellite

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Chennai: India successfully witnessed the lift of an Indian rocket, the first one for 2016. This is the country’s fifth navigation satellite.

“The launch of rocket Polar Satellite Launch Vehicle (PSLV-31) carrying Indian Regional Navigation Satellite System-IRNSS-1E began in the Sriharikota rocket port,” said a senior official at Indian Space Research Organisation (ISRO).

The sole passenger will put, into the orbit, the 1,425 Kg IRNSS-1E satellite.

Till date India has launched four regional navigational satellites (IRNSS-1A, 1B, 1C and ID). This is as part of the constellation of seven satellites to provide accurate position information service to users. The satellite will provide the information across the country and the regions, extending up to an area of 1,500 Km.

The full system, according to sources, comprises of nine satellites. This includes seven in orbit and two on the ground as stand-by. The navigation services will be made operational with four satellites.

As per reports from ISRO, each satellite costs around Rs 150 crore. The PSLV-XL version rocket costs around Rs 130 crore. The seven rockets will involve an outlay of around Rs 910 crore.

In the last four years, the entire IRNSS constellation of seven satellites will be completed in 2016 itself. The first satellite -1A was launched in July 2013, the second IRNSS-1B in April 2014, the third on October 2014 and the fourth on March 2015

According to ISRO, regional navigational system will provide India an independent platform.

At present, IRNSS-1E carries two types of payloads which include navigation and ranging payloads. The former will transmit navigation service signals to the users using L5-band and S-band and a highly accurate Rubidium atomic clock.

The latter consists of a C-band transponder that facilitates accurate determination of the range of the satellites.

According to sources, the life span of satellites is 12 years. IRNSS-1E also carries Corner Cube Retro Reflectors for laser ranging.

On Monday, at 9.31 a.m, the PSLV-XL version rocket was standing 44.4 metres tall, weighing 320 on the India’s rocket port at Sriharikota.

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