IRNSS-1A

IRNSS-1A
Mission type Navigation
Operator ISRO
COSPAR ID 2013-034A
SATCAT № 39199
Mission duration 10 years
Spacecraft properties
Bus I-1K
Manufacturer ISRO Satellite Centre
Space Applications Centre
Launch mass 1,425 kilograms (3,142 lb)
Dry mass 614 kilograms (1,354 lb)[1]
Power 1,660 watts
Start of mission
Launch date 1 July 2013, 18:11 UTC (2013-07-01UTC18:11Z)
Rocket PSLV-XL C22
Launch site Satish Dhawan FLP
Contractor ISRO
Orbital parameters
Reference system Geocentric
Regime Geosynchronous
Longitude 55° E
Perigee 35,706.1 km (22,186.7 mi)[1]
Apogee 35,882.7 km (22,296.5 mi)[1]
Inclination 28.2°[1]
Period 1436.1 minutes[1]
Epoch 22 January 2015, 16:27:41 UTC[1]

IRNSS-1A is the first navigational satellite in the Indian Regional Navigation Satellite System (IRNSS) series of satellites been placed in geosynchronous orbit.[1][2]

Satellite

The satellite has been developed at a cost of ₹1.25 billion (US$19 million),[3][4] and was launched on 1 July 2013. It will provide IRNSS services to the Indian public, which would be a system similar to Global Positioning System (GPS) but only for India and the region around it.[5]

Each IRNSS satellite has two payloads: a navigation payload and CDMA ranging payload in addition with a laser retro-reflector. The payload generates navigation signals at L5 and S-band. The design of the payload makes the IRNSS system inter-operable and compatible with GPS and Galileo.[6] The satellite is powered by two solar arrays, which generate power up to 1,660 watts, and has a life-time of ten years.[1]

Launch

The satellite was launched from the Satish Dhawan Space Centre (SDSC) on 1 July 2013 at 11:41 PM (IST).[7] The launch was postponed from its initial launch date of 26 June 2013 due to a technical snag in the 2nd stage of the PSLV-C22 launch rocket.[8] ISRO then replaced the faulty component in the rocket and rescheduled the launch to 1 July 2013 at 11:43 p.m.[9][10]

Scientists from the German Aerospace Centre (DLR)'s Institute of Communications and Navigation in Oberpfaffenhofen, Germany, have received signals from IRNSS-1A. On 23 July 2013, the German Aerospace Center scientists pointed their 30-meter dish antenna at Weilheim towards the satellite and found that it was already transmitting a signal in the L5 frequency band.[11]

See also

References

  1. 1 2 3 4 5 6 7 8 "IRNSS-1A Satellite details 2013-034A NORAD 39199". N2YO. 22 January 2015. Retrieved 25 January 2015.
  2. ↑ "IRNSS". space.skyrocket.de. Retrieved 8 April 2012.
  3. ↑ "India's first ever dedicated navigation satellite launched". DNA India. 2 July 2013. Retrieved 24 July 2013.
  4. ↑ "India's first dedicated navigation satellite placed in orbit". NDTV. 2 July 2013. Retrieved 24 July 2013.
  5. ↑ "Planned Satellite Launches in 2013". satlaunch.net. 19 March 2013. Retrieved 20 March 2013.
  6. ↑ "IRNSS". space.skyrocket.de. Retrieved 20 March 2013.
  7. ↑ "India launches its first navigation satellite". The Times of India. Retrieved 1 July 2013.
  8. ↑ "Technical snag puts off satellite launch: ISRO". SGP. Retrieved 2 June 2013.
  9. ↑ "PSLV-C22/IRNSS-1A Mission Status". ISRO. Retrieved 26 July 2013.
  10. ↑ S Giri Prasad (14 June 2013). "Indian equivalent of the GPS satellite". The Hindu. Chennai, India. Retrieved 14 June 2013.
  11. ↑ "Indian Regional Navigation Satellite Starts Signal Transmissions". GPS World. 25 July 2013. Retrieved 28 July 2013.

External links

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