ALL ABOUT THE NAVIGATIONAL SATELLITE IRNSS - 1C AND ITS LAUNCHED
ISRO's Polar Satellite Launch Vehicle, PSLV-C26, successfully launched IRNSS-1C, the third satellite in the Indian Regional Navigation Satellite System (IRNSS), in the early morning hours of October 16, 2014 from Satish Dhawan Space Centre, Sriharikota.
This is the twenty seventh consecutively successful mission of PSLV. The 'XL' configuration of PSLV was used for this mission. Previously, the same configuration of the vehicle was successfully used six times.
PSLV-C26 Flight PathAfter the lift-off of PSLV-C26 with the ignition of the first stage, the important flight events, namely, stage and strap-on ignitions, heat-shield separation, stage and strap-on separations and satellite injection, took place as planned. After a flight of about 20 minutes 18 seconds, IRNSS-1C Satellite, weighing 1425 kg, was injected to an elliptical orbit of 282.56 km X 20,670 km, which is very close to the intended orbit.
After injection, the solar panels of IRNSS-1C were deployed automatically. ISRO's Master Control Facility at Hassan, Karnataka assumed the control of the satellite.
IRNSS-1C – Provides position information in the Indian regionIRNSS-1C is the third of the seven satellites constituting the space segment of the Indian Regional Navigation Satellite System. IRNSS-1A and IRNSS-1B, the first two satellites of the constellation, were successfully launched by PSLV on July 02, 2013 and April 04, 2014 respectively. Both IRNSS-1A and 1B are functioning satisfactorily from their designated geosynchronous orbital positions.
IRNSS-1C- Payloads Payloads - IRNSS-1C carries two types of payloads – navigation payload and ranging payload. The navigation payload of IRNSS-1C will transmit navigation service signals to the users. This payload will be operating in L5 band (1176.45 MHz) and S band (2492.028 MHz). A highly accurate Rubidium atomic clock is part of the navigation payload of the satellite. The ranging payload of IRNSS-1C consists of a C-band transponder which facilitates accurate determination of the range of the satellite. IRNSS-1C also carries Corner Cube Retro Reflectors for laser ranging.
IRNSS-1C – Some Facts
What is IRNSS?
IRNSS is an independent regional navigation satellite system designed to provide position information in the Indian region and 1500 km around the Indian mainland. IRNSS would provide two types of services, namely, Standard Positioning Services (SPS) - provided to all users - and Restricted Services (RS), provided to authorised users.
A number of ground stations responsible for the generation and transmission of navigation parameters, satellite control, satellite ranging and monitoring, etc., have been established in as many as 15 locations across the country.
In the coming months, the next satellite of this constellation, namely, IRNSS-1D is scheduled to be launched by PSLV. The entire IRNSS constellation of seven satellites is planned to be completed by 2015.
Applications of IRNSS:
ISRO's Polar Satellite Launch Vehicle, PSLV-C26, successfully launched IRNSS-1C, the third satellite in the Indian Regional Navigation Satellite System (IRNSS), in the early morning hours of October 16, 2014 from Satish Dhawan Space Centre, Sriharikota.
This is the twenty seventh consecutively successful mission of PSLV. The 'XL' configuration of PSLV was used for this mission. Previously, the same configuration of the vehicle was successfully used six times. PSLV-C26 Flight PathAfter the lift-off of PSLV-C26 with the ignition of the first stage, the important flight events, namely, stage and strap-on ignitions, heat-shield separation, stage and strap-on separations and satellite injection, took place as planned. After a flight of about 20 minutes 18 seconds, IRNSS-1C Satellite, weighing 1425 kg, was injected to an elliptical orbit of 282.56 km X 20,670 km, which is very close to the intended orbit.
After injection, the solar panels of IRNSS-1C were deployed automatically. ISRO's Master Control Facility at Hassan, Karnataka assumed the control of the satellite.
IRNSS-1C – Provides position information in the Indian regionIRNSS-1C is the third of the seven satellites constituting the space segment of the Indian Regional Navigation Satellite System. IRNSS-1A and IRNSS-1B, the first two satellites of the constellation, were successfully launched by PSLV on July 02, 2013 and April 04, 2014 respectively. Both IRNSS-1A and 1B are functioning satisfactorily from their designated geosynchronous orbital positions.
IRNSS-1C- Payloads Payloads - IRNSS-1C carries two types of payloads – navigation payload and ranging payload. The navigation payload of IRNSS-1C will transmit navigation service signals to the users. This payload will be operating in L5 band (1176.45 MHz) and S band (2492.028 MHz). A highly accurate Rubidium atomic clock is part of the navigation payload of the satellite. The ranging payload of IRNSS-1C consists of a C-band transponder which facilitates accurate determination of the range of the satellite. IRNSS-1C also carries Corner Cube Retro Reflectors for laser ranging.
IRNSS-1C – Some Facts
| Lift-off Mass | 1425.4 kg |
| Physical Dimensions | 1.58 metre x 1.50 metre x 1.50 metre |
| Orbit | Geostationary, at 83 deg East longitude |
| Power | Two solar panels generating 1660 W, one lithium-ion battery of 90 Ampere-Hour capacity |
| Propulsion | 440 Newton Liquid Apogee Motor, twelve 22 Newton Thrusters |
| Control System | Zero momentum system, orientation input from Sun & Star Sensors and Gyroscopes; Reaction Wheels, Magnetic Torquers and 22 Newton thrusters as actuators |
| Mission Life | 10 years |
| Launch date | Oct 16, 2014 |
| Launch site | SDSC SHAR Centre, Sriharikota, India |
| Launch vehicle | PSLV - C26 |
What is IRNSS?
IRNSS is an independent regional navigation satellite system designed to provide position information in the Indian region and 1500 km around the Indian mainland. IRNSS would provide two types of services, namely, Standard Positioning Services (SPS) - provided to all users - and Restricted Services (RS), provided to authorised users. A number of ground stations responsible for the generation and transmission of navigation parameters, satellite control, satellite ranging and monitoring, etc., have been established in as many as 15 locations across the country.
In the coming months, the next satellite of this constellation, namely, IRNSS-1D is scheduled to be launched by PSLV. The entire IRNSS constellation of seven satellites is planned to be completed by 2015.
Applications of IRNSS:
- Terrestrial, Aerial and Marine Navigation
- Disaster Management
- Vehicle tracking and fleet management
- Integration with mobile phones
- Precise Timing
- Mapping and Geodetic data capture
- Terrestrial navigation aid for hikers and travellers
- Visual and voice navigation for drivers
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