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India successfully launched its first Navigational Satellite IRNSS-1A

Jul 2, 2013 13:10 IST

India on 1 July 2013 successfully launched its first dedicated navigation satellite, IRNSS-1A using Polar Satellite Launch Vehicle (PSLV)-C22. IRNSS (Indian Regional Navigational Satellite System)-1A was launched from Satish Dhawan Space Research Center in Sriharikota, Andhra Pradesh. After a flight of 20 minutes 17 seconds, the IRNSS-1A Satellite, weighing 1425 kg, was injected to the intended elliptical orbit of 282.46 km X 20,625.37 km at 00:01 hours. This was the first launch operation conducted by ISRO in night. 

IRNSS-1A was launched on 1 July 2013 at 23:41 pm IST and was placed in the orbit on 2 July 2013 at 00:01 minutes and 17 seconds after a flight of 20 minutes 17 seconds.

The important flight events are stage and strap-on ignitions, heat-shield separation, stage and strap-on separations and satellite injection took place exactly as planned.

The XL configuration of PSLV was used for the mission. Previously, the same configuration of the vehicle was used thrice to launch Chandrayaan-1, GSAT-12 and RISAT-1 satellites. This was the 23rd Successive flight of PSLV.

With this launch, India has stepped into the new era of its space applications. The data collected by the satellite would help the country in a series of fields like disaster management, fleet management, vehicle tracking and marine navigation.

About the Satellite

• IRNSS-1A is the first of the seven satellites constituting the space segment of the Indian Regional Navigation Satellite System. The entire IRNSS constellation of seven satellites is planned to be completed by 2015-16.
• IRNSS-1A is designed to provide accurate position information service to users in the country as well as the region extending up to 1500 km from its boundary, which is its primary service area.
• IRNSS-IA is among the first seven satellites that constitutes the Indian Regional Navigation Satellite System (IRNSS) Space Segment. The mission has a life of 10 years.
• The satellite was launched into the satellite was placed satellite in its Geosynchronous Circular Orbit at 55 deg East longitude.
• The navigational payload of the IRNSS-1A will transmit the service signals of navigation to users with its operations in L5 of 1176.45 MHz and S Band of 2492.028 MHz. The Rubidium atomic clock and the ranging payload of the C Band transponder would facilitate accurate determination of the range of IRNSS

IRNSS satellites are designed on the lines of Global Positioning System (GPS) of United States', Global Orbiting Navigation Satellite System (GLONASS) of Russia, BeiDou satellite navigation system of China, Galileo (GNSS) of European Union's and the Quasi-Zenith Satellite System.

Features of Navigation System

The navigation system would provide two types of services to India and they are Standard Positioning Service and Restricted Service. Standard positioning services will be available to all users, whereas the restricted version is an encrypted service that would be made available to authorized users only.

IRNSS Applications

• Mapping and geodetic data capture with precise timing
• Visual and voice navigation for drivers,
• Integration with mobile phones and terrestrial
• Aerial and marine navigation,
• Terrestrial navigation aid for hikers and travelers

India aims to place the seven-satellites of the IRNSS space segment in orbit by end of 2014 with a position accuracy of 20 meters in the primary service area at an investment of 1420 crore rupees.

Apart from this, Dr. Radhakrishnan, the Chairman of ISRO on the day of launch of IRNSS-1A announced that India will step into the its first Mars mission by November 2013.

History of Space Journey of India

The Space Journey of India was started with the launch of Aryabhatta in 1975 using a Russian rocket. Till date, India has successfully completed its 100 space missions. The PSLV C 25 that will carry the mars orbiter would be launched any day after 21 October 2013.

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