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Post at: Aug 18 2021


Why in News?

  • On July 29, 2021, Union Minister of State for the Department of Space, Dr. Jitendra Singh informed the Rajya Sabha that the Indian Space Research Organisation (ISRO) is rescheduled to launch geo-imaging satellite EOS-03 for earth observation, in the third quarter of 2021.

About EOS - 03

  • It would enable near real-time monitoring of natural disasters like floods and cyclones.
  • It would also enable monitoring of water bodies, crops, vegetation condition, forest cover changes, and borders.
  • It will be launched by the Geosynchronous Satellite Launch Vehicle (GSLV - MK2) rocket from the Satish Dhawan Space Centre Sriharikota, Andhra Pradesh.
  • The satellite will be placed in geostationary orbit where it will revolve around the Earth at an altitude of 36 thousand kilometers.
  • The Ogive Shaped Payload Fairing (OPLF) satellite will be launched for the first time from the GSLV MK2 rocket. This means that the satellite will look like an arch of 4 metres diameter.
  • According to ISRO sources, this will be the eighth flight of a rocket equipped with an indigenous cryogenic engine and the 14th flight of the GSLV rocket.
  • The satellite weighing 2268kg, will be India's heaviest earth observation satellite till date.
  • The inclination of the satellite will be 19.4 degrees so that it can keep an eye on the entire country.
  • It is capable of imaging the whole country four- five times daily.
  • As an earth observation satellite, it will be equipped with remote sensing technology

Advantage of radar imaging technology

  • It can produce high-quality images in all conditions and is unaffected by weather, cloud or fog or the lack of sunlight.

About Earth Observation Satellites

  • An Earth Observation satellite or Earth remote sensing satellite is a satellite used or designed for Earth observation from orbit, including spy satellites and similar ones intended for non-military uses such as environmental monitoring, meteorology, cartography and others.
  • These satellites used to revolve around the earth from pole to pole at an attitude of 600km once in 90 minutes.

History of Earth Observation Satellites in India

  • Starting with IRS-1A in 1988, ISRO launched many operational remote sensing technologies. Today, India has one of the largest constellations of remote sensing satellites in operation.
  • Currently, thirteen operational satellites are in sun-synchronous orbit - RESOURCE SAT-1, 2 A,CARTOSAT - 1, 2, 2A, 2B, RISAT-1 AND 2, OCEANSAT - 2, Megha Tropiques, SARAL and SCATSAT-1, four in Geostationary orbit INSAT - 3D, Kalpana & INSAT 3A, INSAT 3DR.

Fig. Organisational Structure of ISRO
About ISRO    

  • It is the national space agency of India.     
  • Founder : Vikram Sarabhai
  • Founded : 15 August 1969
  • Headquarters : Bengaluru
  • Director : Kailasavadivoo Sivan
  • Subsidiary : Vikram Sarabhai Space Centre

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