, Edited by Defined Desk | Pune |
Up to date: November 7, 2020 3:37:23 pm
India despatched its first house mission in nearly a yr with a launch of EOS-01, an earth statement satellite tv for pc, this afternoon. EOS-01, together with 9 satellites from overseas nations, was launched by a PSLV rocket twelve minutes previous three.
That is ISRO’s first mission because the launch of RISAT-2BR1, one other earth statement satellite tv for pc just like EOS-01, on December 11 final yr. After that, ISRO had additionally despatched communication satellite tv for pc GSAT-30 in house in January this yr, however that was performed utilizing an Ariane rocket launched from French Guiana.
Thereafter, ISRO’s launch schedule was totally derailed by the coronavirus epidemic. ISRO had deliberate greater than 20 satellite tv for pc launches within the fiscal yr 2020-21, together with excessive profile missions like Aditya L1, the primary exploratory mission to Solar, and unmanned Gaganyaan, the precursor to India’s first manned house flight. Half of the deliberate launches had been these of earth statement satellites just like the one which had been despatched in the present day.
EOS-01 is nothing however one other Radar Imaging Satellite tv for pc (RISAT) that can work along with RISAT-2B and RISAT-2BR1 launched final yr. EOS-01 was initially named RISAT-2BR2, and was purported to be the third of the three-spacecraft constellation aimed toward offering all-weather round the clock service for high-resolution photographs.
With EOS-01, ISRO is shifting to a brand new naming system for its earth statement satellites which until now have been named thematically, in accordance with the aim they’re meant for. For instance, the Cartosat collection of satellites had been meant to offer information for land topography and mapping, whereas the Oceansat satellites had been meant for observations over sea. Some INSAT-series, Resourcesat collection, GISAT, Scatsat, and a few extra are all earth statement satellites, named in a different way for the particular jobs they’re assigned to do, or the totally different devices that they use to do their jobs.
Land and forest mapping and monitoring, mapping of sources like water or minerals or fishes, climate and local weather observations, soil evaluation, geospatial contour mapping are all performed by way of earth-observation satellites.
Henceforth, it appears, all of the earth statement satellites could be known as EOS-series.
EOS-01, like its cousins RISAT-2B and RISAT-2BR1, makes use of artificial aperture radars to supply high-resolution photographs of the land. One huge benefit that radar imaging has over optical devices is that it’s unaffected by climate, cloud or fog, or the shortage of daylight. It may possibly produce high-quality photographs in all circumstances and always.
Relying on the wavelength of the electromagnetic radiation utilized by the radar, totally different properties on land might be captured within the picture. For instance, a low wavelength sign can seize tree cowl or vegetation, whereas the next wavelength sign can penetrate even dense tree cowl to take a look at the contours of land beneath.
EOS-01, and its sister RISATs, use X-band radars that function at low wavelengths and are thought-about greatest for monitoring of city panorama, and imaging of agricultural or forest land. Based on ISRO, EOS-01 is meant for functions in agriculture, forestry and catastrophe administration help. The radar photographs are additionally thought-about to be immensely helpful for navy necessities.
For the launch of EOS-01, ISRO used a brand new variant of its PSLV rocket that has been flown solely as soon as earlier than, in January final yr, when it had positioned the Microsat-R satellite tv for pc in orbit. This Microsat-R was the one which was introduced down in March final yr in India’s first anti-satellite check, an illustration of its functionality to hit an in-orbit enemy satellite tv for pc in house.
This variant of PSLV doesn’t grow to be waste after depositing its satellite tv for pc within the orbit. As a substitute, the final stage of the rocket, the one that continues to be after the satellite tv for pc is separated, can purchase its personal orbit and be used as an orbital platform for different onboard devices to carry out experiments in house. In impact, the fourth stage acts like one other satellite tv for pc, with a life span of about six months.
For the PSLV, this was the 51st flight. Solely two of its launches haven’t been profitable.
Of the 9 overseas satellites being carried within the mission, 4 every are from america and Luxembourg, whereas one other is a know-how demonstrator from Lithuania.
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