IRS-1A, Indian Remote Sensing satellite-1A, the first of the series of indigenous state-of-art remote sensing satellites, was successfully launched into a polar Sun-synchronous orbit on 17 March 1988 from the Soviet Cosmodrome at Baikonur. IRS-1A carries two sensors, LISS-1 and LISS-2, with resolutions of Template:Cvt and Template:Cvt respectively with a swath width of about Template:Cvt during each pass over the country. Undertaken by the Indian Space Research Organisation (ISRO). It was a part-operational, part-experimental mission to develop Indian expertise in satellite imagery.
History
The availability of Landsat imagery created a lot of interest in the science community. The Hyderabad ground station started receiving Landsat data on a regular basis in 1978. The Landsat program with its design and potentials was certainly a great model and yardstick for the IRS programme. IRS-1A was the first remote sensing mission to provide imagery for various land-based applications, such as agriculture, forestry, geology, and hydrology.[1] The mission's long-term objective was to develop indigenous remote sensing capability.[2]
Satellite description
The satellite bus, measuring 1.56 m x 1.66 m x 1.10 metres, had the payload module attached on the top and a deployable solar panels stowed on either side. Attitude control was provided by four-momentum wheels, two magnetic torques, and a thruster system. Together, they gave an estimated accuracy of better than ± 0.10° in all three axes.[1]
Instruments
IRS-1A carried two "Linear Imaging Self-Scanning Sensor", LISS-1 and LISS-2, with a spatial resolution of Template:Cvt and Template:Cvt respectively.[3] The three-axis-stabilised Sun-synchronous satellite carried LISS sensors which performed "push-broom" scanning in visible and near-infrared bands to acquire images of the Earth. Local equatorial crossing time (ECT) was fixed at around 10:30 of the morning.[1]
Launch
IRS-1A was launched on 17 March 1988, at 06:43:00 UTC. It had a perigee of Template:Cvt, an apogee of Template:Cvt, an inclination of 99.01°, and an orbital period of 102.7 minutes.[4]
Mission
IRS-1A was operated in a Sun-synchronous orbit. IRS-1A successfully completed its mission on 1 July 1992 after operating for 4 years.[5]
See also
References
- ↑ 1.0 1.1 1.2 Display: IRS-1A 1988-021A. NASA(27 April 2021). Retrieved 12 May 2021. Template:PD-notice
- ↑ Indian Remote Sensing Satellite-1A. CEOS International Directory Network (IDN). Retrieved April 8, 2013.
- ↑ IRS-1A (Indian Remote Sensing Satellite-1A). ESA Earth Observation Portal. Retrieved 12 May 2021.
- ↑ Trajectory: IRS-1A 1988-021A. NASA(27 April 2021). Retrieved 12 May 2021. Template:PD-notice
- ↑ IRS-1A. World Meteorological Organization(28 July 2015). Retrieved 12 May 2021.Template:Dead link
External links
Template:IRS satellites Template:Indian spacecraft Template:Orbital launches in 1988