ISRO successfully launches HySIS satellite aboard PSLV-C43
The Indian Space Research Organisation has successfully launched a hyperspectral imaging satellite, an earth observation satellite along with 30 foreign commercial satellites from Sriharikota launch centre in Andhra Pradesh.
The Indian Space Research Organisation (ISRO) on November 29, 2018 successfully launched a hyperspectral imaging satellite (HySIS), an earth observation satellite along with 30 foreign commercial satellites from Sriharikota launch centre in Andhra Pradesh.
The satellites were launched through Polar Satellite Launch Vehicle (PSLV-C43) from the first launch pad of the Satish Dhawan Space Centre in Sriharikota. This was the 45th launch flight of the polar satellite launch vehicle (PSLV) rocket.
• PSLV is a four stage launch vehicle with alternating solid and liquid stages. PSLV-C43 is the Core Alone version of PSLV which is the lightest version of PSLV.
• HySIS is an earth observation satellite developed by ISRO. It is the primary satellite of the PSLV-C43 mission. The mass of the satellite is about 380 kg.
• The satellite was placed in 636 km polar sun synchronous orbit with an inclination of 97.957 deg. The mission life of the satellite is expected to be 5 years.
• The foreign satellites launched along with HySIS include 1 Micro and 29 Nano satellites from 8 different countries.
• All these satellites were placed in a 504 km orbit by PSLV-C43. Out of the 30 commercial satellites, 23 are from the United States.
• These satellites have been commercially contracted for launch through Antrix Corporation Limited, the commercial arm of ISRO.
This is the first time that a full-fledged hyperspectral imaging satellite has been launched. The hyspex technology is still an evolving science and has become a new global trend.
Hyperspectral imaging combines the power of digital imaging and spectroscopy. It collects and processes information from across the electromagnetic spectrum.
The satellite, which can see in 55 spectral or colour bands from 630 km above the ground, will be used for a range of applications like agriculture, forestry and assessment of coastal zones, inland waters, soil and other geological environments.
The primary goal of the hyper spectral imaging satellite would be to study the earth’s surface in visible, near infrared and shortwave infrared regions of the electromagnetic spectrum.
Being an advanced earth observation satellite, it will also be used by the military for surveillance purpose.
The hi-tech imaging will enable distinct identification of objects, material or processes on the Earth by reading the spectrum for each pixel of a scene from space.
The optical imaging detector array chip in the HySIS satellite has been designed by Isro's Ahmedabad-based space applications centre and manufactured by its electronic arm, semi-conductor laboratory, Chandigarh.
The satellite will provide Earth observation service till 2023.