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Isro to launch India’s 3rd navigation satellite on October 10

The Indian Space Research Organisation (Isro’s) work-horse Polar Satellite Launch Vehicle (PSLV) is getting ready for its 28th flight, after the successful launch of the Mars Orbiter Mission (MOM).

In the early hours of October 10, IRNSS-1C, India’s third navigation satellite, will be launched from Sriharikota, about 90 kms from Chennai. Isro said that the launch will be from the first launch pad (FLP) of Satish Dhawan Space Centre (SDSC), Sriharikota at 01:56 hours (IST).

PSLV-C26 and will use ‘XL’ version of PSLV and this is the seventh time the XL configuration is being flown. 

The Indian Regional Navigation Satellite System (IRNSS) is an independent regional navigation satellite system being developed by India. It is designed to provide accurate positional information to users in India as well as the region extending upto 1500 km from its boundary, said Isro.
IRNSS-1C is the third navigation satellite of the seven satellites constituting the IRNSS space segment. Its predecessors, IRNSS-1A and IRNSS-1B were launched by PSLV-C22 and PSLV-C24 in July 2013 and April 2014 respectively. 

IRNSS-1C has a lift-off mass of 1425.4 kg. The configuration of IRNSS-1C is similar to that of IRNSS-1A and IRNSS-1B. 

The satellite has been realised in less than six months after the launch of its predecessor.

It will carry two types of payloads – navigation payload and ranging payload. The navigation payload of IRNSS-1C will transmit navigation service signals to the users.

This payload will operate in L5 band (1176.45 MHz) and S band (2492.028 MHz). A highly accurate Rubidium atomic clock is part of the navigation payload of the satellite. 

The ranging payload of IRNSSS-1C consists of a C-band transponder, which facilitates accurate determination of the range of the satellite. IRNSS-1C also carries Corner Cube Retro Reflectors for laser ranging, said Isro.


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