isro: Isro lines up 3 Earth Observation Satellites with key indigenous technologies | India News

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The Indian Space Research Organization (Isro), which has had a negligible year when it comes to launch missions, expects to launch three Earth observation satellites (EOS) in the last quarter of 2021.
While two of them, EOS-4 (Risat-1A) and EOS-6 (Oceansat-3), will launch using Isro’s PSLV workhorse, the third, EOS-2 (Microsat), will launch in the first. development flight. of the Small Satellite Launch Vehicle (SSLV), which ushers in a new class of launch vehicles in India.
Isro has completed SSLV Payload Fairing (SPLF) successful functional qualification test and other testing activities are in progress. EOS-4 was originally due to launch in September, sources at Isro said, adding that the review committee had not authorized the satellite, postponing the launch.
President of isro K Sivan told TOI: “The plan is to achieve those launches by the end of this year, but since we would be using some key indigenous systems such as the TR module, TWTA and circulators as part of our effort to reduce imports, we will be conducting extensive tests to find out if there are any technical problems. This may take some time. ”
TR modules refer to transmitting and receiving modules that aid in satellite telemetry and tracking, while TWTAs (Traveling Wave Tube Amplifiers) are commonly used in satellite communication links, observation payloads of the earth, scientific missions or probes, communication links between spacecraft, etc.
As TOI reported in March, Isro has been looking to indigenize various technologies aimed at reducing imports.
New model
Additionally, Sivan said that the launch of EOS-4 would also usher in a new model for Isro as envisioned by the space reforms initiated by the Center.
“… Previously, we had a supply-driven model. After Isro made a satellite, we offered it to ministries and government agencies. Now even Isro is considering a demand-driven model. From the next satellite, we will be doing this, ”he said.
The three satellites the space agency plans to launch are aimed at ministries such as agriculture, home affairs, earth and environmental sciences, and forests.
different to communication satellites Where full capacity could be demanded by one customer, a single Earth observation satellite can serve multiple customers simultaneously, as the data generated by these satellites can be analyzed for different uses.





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