Home : Missions : Navigation : IRNSS - Indian Regional Navigation Satellite System : SALIENT FEATURES OF IRNSS 1G Last updated on: 28-Apr-2016

SALIENT FEATURES OF IRNSS 1G


Mission Navigation Satellite
Payload Navigation payload in S band and L5 band, CDMA ranging payload in C band, Rubidium Atomic Frequency Standard
Mass Lift - off Mass : 1430 Kg, Dry Mass : 610 Kg
Power Requirement 2 solar panels generating 1674 W , Batteries: 1 x 90 Ah Li Ion batteries
Bus Platform Standard I-1K
Propulsion System Conventional Bipropellant system with 12 thrusters and one 440N Liquid Apogee motor configuration use Mono Methyl Hydrazine as fuel and Mixed Oxides of Nitrogen (MON-3) as oxidizer.
Control System 3-axes body stabilized Zero momentum biased system with AOCE, star sensors, sun sensors, reaction wheels (tetrahedral configuration), magnetic torquers and thrusters
Mission life >10 years
Orbital slot Geo-synchronous orbit / 129.5o E Longitude with 5.1o inclination
TTC System CCSDS Type C-band & Ext-C Telemetry, Tracking & Command Systems
Special Features / New Technologies
  • Atomic clock
  • Dual 1553 Bus concept
  • Dual Helix Array Antenna (dia. 1.1m) in L5 and S bands
  • Planar Array Antenna
  • Synthesizer based TTC receiver
  • Yaw flipping maneuver
  • High power 250 W TWTA in S band
Launch April 28, 2016
Launch vehicle PSLV-C33