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REPORT ON: SPACECRAFT TYPES AND MISSIONSSUB TOPIC: I R N S S

REPORTED BY: Y KIRAN KUMAR 12951A2171 SAI KRISHNA 12951A2189 SAMPATH 13955A2110 PRASHANTH.M 12951A2183 SRINIVAS 12951A2171 SURYAM 12951A2199 AJAY.KN 13955A2107

SIGNATURE OF FACULTY: NIKHIL FRANKLIN SPACECRAFT MISSIONS AND TYPES

SUB TOPIC: INDIAN REGIONAL NAVIGATION SATELLITE SYSTEM (IRNSS) Definition The Indian Regional Navigation Satellite System (IRNSS) is an autonomous regional satellite being developed by the Indian Space Research Organization (ISRO) which would be under complete control of the Indian government. The requirement of such a navigation system is driven the Indian government.

Development

As part of the project, ISRO opened a new satellite navigation center within the campus of ISRO Deep Space Network (DSN) at Byalalu near Bangalore in Karnataka on 28 May 2013. A network of 21 ranging stations located across the country will provide data for the orbit determination of the satellites and monitoring of the navigation signal. Working

In April 2010, it was reported that India plans to start launching satellites by the end of 2011, at a rate of one satellite every six months. This would have made the IRNSS functional by 2015. India also launched 3 new satellites into space to supplement this. Seven satellites with the prefix IRNSS-1 will constitutethe space segment of the IRNSS. IRNSS-1A, the first of the seven satellites of the IRNSS constellation, on 1 July 2013. IRNSS-1B was launched on 4 April 2014.IRNSS-1C was launched on 16 October 2014. In 2014, one more navigational satellite IRNSS-1D would be launched in December. Three more navigational satellites will be launched early 2015 and by middle of 2015, India will have the full navigational satellite system in place.

Satellite which is used for the navigation.

DescriptionThe proposed system would consist of a constellation of seven satellites and a support ground segment. Three of the satellites in the constellation will be located in geostationary orbit at 32.5 east, 83 east, and 131.5 East longitudes. Two of the GSOs will cross the equator at 55 East and two at 111.75 East. Such an arrangement would mean all seven satellites would have continuous radio visibility with Indian control stations. The satellite payloads would consist of atomic clocks and electronic equipment to generate the navigation signals.The navigation signals themselves would be transmitted in the S-band frequency (24 GHz) and broadcast through a phased array antenna to maintain required coverage and signal strength. The system is intended to provide an absolute position accuracy of better than 10 meters throughout Indian landmass and better than 20 meters in the Indian Ocean as well as a region extending approximately 1,500 km around India.

Satellites The main satellites which are used in Indian navigation.

IRNSS-1A

Details about IRNSS-1A

IRNSS-1A the first navigational satellite in the Indian Regional Navigation Satellite System series of satellites to be placed in geosynchronous orbit was built at ISRO Satellite Centre, Bangalore, costing 125 cores. It has a lift-off mass of 1380 kg, and carries a navigation payload and a C-band ranging transponder, which operates in L5 band and S band (2492.028 MHz). The satellite was launched on-board PSLV-C22 on 1 July 2013 from the Satish Dhawan Space Centre at Sriharikota, while the full constellation is planned to be placed in orbit by 2015.

IRNSS-1A SATELLITE

IRNSS-1B

Details about: IRNSS-1B

IRNSS-1B is the second out of seven in the Indian Regional Navigation Satellite System. It has been very precisely and successfully placed in its orbit through PSLVC24 rocket on 4 April 2014.

IRNSS 1B SATELLITE

IRNSS-1C

Details about: IRNSS-1C

IRNSS-1C is the Third out of seven in the Indian Regional Navigation Satellite System series of satellites. The satellite was successfully launched using Indias PSLV-C26 from the Satish Dhawan Space Centre at Sriharikota on 16th of October at 1:32 am.

IRNSS-1D

Details about: IRNSS-1D

IRNSS-1D will be the Fourth out of seven in the Indian Regional Navigation Satellite System series of satellites system. Its launch is planned in December 2014.

IRNSS-1EDetails about: IRNSS-1E

IRNSS-1E will be the fifth out of seven in the Indian RegionalNavigation Satellite System series of satellites system.Its launch is planned in March 2015.

IRNSS-1F

Details about: IRNSS-1F

IRNSS-1F will be the sixth out of seven in the Indian Regional Navigation Satellite System series of satellites system. Its launch is planned in March 2015.

IRNSS-1G

Details about: IRNSS-1G

IRNSS-1G will be the seventh out of seven in the Indian Regional Navigation Satellite System series of satellites system. Its launch planned in March 2015.

These are the some main satellites used of Indian navigation.pg. 3