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IRNSS

Jump to: Mission Objectives, Mission Instrumentation, Mission Parameters, Additional Information

Mission Photos:

IRNSS-1A satellite
Courtesy of ISRO

Mission Objectives:

The Indian Regional Navigation Satellite System (IRNSS) consists of a constellation of seven satellites and a ground segment for positioning and timing applications. IRNSS is under development by the Indian Space Research Organisation (ISRO). INRSS will include three satellites in geostationary orbit and four satellites in geosynchronous orbit, transmitting L-band and S-band signals and providing coverage primarily for the Indian land mass.

SLR tracking data will be used for orbit determination and calibration of the orbit determined from other sources.

Mission Instrumentation:

INRSS satellites will have the following instrumentation onboard:

  • Atomic clocks
  • L and S-band transmitters
  • Retroreflector array
Mission Parameters:
Satellite: IRNSS-1A IRNSS-1B IRNSS-1C IRNSS-1D
Sponsor: ISRO ISRO ISRO ISRO
Expected Life: 10 years 12 years 12 years 12 years
Primary Applications: Positioning and timing Positioning and timing Positioning and timing Positioning and timing
Primary SLR Applications: Orbit determination Orbit determination Orbit determination Orbit determination
COSPAR ID: 13034A 1401701 1406101 1501801
SIC Code: 3301 3302 3303 3304
NORAD SSC Code: 39199 39635 40269 40547
Launch Date: July 1, 2013 April 4, 2014 October 9, 2014 March 28, 2015
NP Bin Size: 300 seconds 300 seconds 300 seconds 300 seconds
RRA Shape: Hexagon Hexagon Hexagon Hexagon
Cube Diameter: 38 mm 38 mm 38 mm 38 mm
Reflectors: 40 corner cubes 40 corner cubes 40 corner cubes 40 corner cubes
Inclination: 29 degrees 31 degrees 5 degrees 30.5 degrees
Longitude: 55 degrees East 55 degrees East 83 degrees East 111.75 degrees East
Eccentricity: 0.0002 0.0002 0.0002 0.0002
Altitude: 42,164 km 42,164 km 42,164 km 42,293 km

 

Satellite: IRNSS-1E IRNSS-1F IRNSS-1G IRNSS-1H
Sponsor: ISRO ISRO ISRO ISRO
Expected Life: 12 years 12 years   12 years
Primary Applications: Positioning and timing Positioning and timing Positioning and timing Positioning and timing
Primary SLR Applications: Orbit determination Orbit determination Orbit determination Orbit determination
COSPAR ID: 1600301 1601501 1602701  
SIC Code: 3305 3306 3307 3308
NORAD SSC Code: 41241 41384 41469  
Launch Date: January 20, 2016 March 08, 2016 April 28, 2016 August 31, 2017
NP Bin Size: 300 seconds 300 seconds   300 seconds
RRA Shape: Hexagon Hexagon   Hexagon
Cube Diameter: 38 mm 38 mm   38 mm
Reflectors: 40 corner cubes 40 corner cubes   40 corner cubes
Inclination: 29 degrees 29 degrees   28.5 degrees
Longitude: 111.75 degrees East 32.5 degrees East   55 degrees East
Eccentricity: 0.0002 0.0002   0.0002
Altitude: 35,790 – 36,000 km 35,790 – 36,000 km   35,790 – 36,000 km

Additional Information:

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