IRNSS-1A

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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 1,380 kilograms (3,040 lb)
Dry mass 614 kilograms (1,354 lb)[1]
Power 1,300 watts
Start of mission
Launch date 1 July 2013, 18:11 (2013-07-01UTC18:11Z) UTC
Rocket PSLV-XL C22
Launch site Satish Dhawan FLP
Contractor ISRO
Orbital parameters
Reference system Geocentric
Regime Geosynchronous
Longitude 55° East
Perigee 35,713 kilometres (22,191 mi)
Apogee 35,873 kilometres (22,290 mi)
Inclination 27.12 degrees
Period 23.93 hours
Epoch 9 November 2013, 00:26:01 UTC[2]

IRNSS-1A is the first navigational satellite in the Indian Regional Navigational Satellite System (IRNSS) series of satellites been placed in geosynchronous orbit.[1][3]

Satellite

The satellite has been developed at a cost of INR125 crore (US$20 million),[4][5] 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.[6]

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.[7] 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).[8] 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.[9] ISRO then replaced the faulty component in the rocket and rescheduled the launch to 1 July 2013 at 11:43 p.m.[10][11]

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.[12]


See also

References

  1. ↑ 1.0 1.1 1.2 "IRNSS-1A". n2yo. Retrieved 26 July 2013. 
  2. ↑ Peat, Chris (9 November 2013). "IRNSS R1A - Orbit". Heavens Above. Retrieved 9 November 2013. 
  3. ↑ "IRNSS". space.skyrocket.de. Retrieved 2012-04-08. 
  4. ↑ "India's first ever dedicated navigation satellite launched". DNA India. 2 July 2013. Retrieved 24 July 2013. 
  5. ↑ "India's first dedicated navigation satellite placed in orbit". NDTV. 2 July 2013. Retrieved 24 July 2013. 
  6. ↑ "Planned Satellite Launches in 2013". satlaunch.net. March 19, 2013. Retrieved March 20, 2013. 
  7. ↑ "IRNSS". space.skyrocket.de. Retrieved March 20, 2013. 
  8. ↑ "India launches its first navigation satellite". Retrieved July 1, 2013. 
  9. ↑ "Technical snag puts off satellite launch: ISRO". SGP. Retrieved June 2, 2013. 
  10. ↑ "PSLV-C22/IRNSS-1A Mission Status". ISRO. Retrieved 26 July 2013. 
  11. ↑ S Giri Prasad. "Indian equivalent of the GPS satellite". The Hindu. Retrieved June 14, 2013. 
  12. ↑ "Indian Regional Navigation Satellite Starts Signal Transmissions". GPS World. 25 July 2013. Retrieved 28 July 2013. 

External links

IRNSS satellites
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