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Ottawa/Mumbai: There has been a slight change in the launch schedule of the first joint NISAR (NASA ISRO Synthetic Aperture Radar) of America and India. That is, according to the original time table, the plan was to launch the Nisar satellite from India's Sriharikota space station in May 2024. However, the satellite is likely to be launched after August 2024 as some of the critical scientific instruments of the NISAR satellite have to be improved.
This important information has been given by very reliable sources of the Indian Space Research Organization (ISRO).
While giving exclusive information to Gujarat Samachar, Director of ISRO's sister organization Space Application Center (SAC-SEC-Ahmedabad), Nilesh Kumar Desai said that for the first time in the field of space, NASA and ISRO have prepared a joint project named NISAR. Investigation. As per the original schedule, NISAR was to be launched in May 2024 from India's Sriharikota space station. During this preparation, all the scientific instruments of NISAR have been tested.
During scientific trials conducted by ISRO, it was found that a special type of coating was required around the reflector of the radar antenna developed by NASA. When the NISAR satellite goes into space and begins its operations, it is exposed to extreme boiling temperatures. And radiation. (Radiation) is likely to have adverse effects. Also, if the temperatures are even higher than expected, the entire structure of the NISAR satellite could be seriously damaged. ISRO has informed NASA about this very important test.
Keeping in mind that such a dangerous situation does not arise in the NISAR satellite, the radar antenna reflector prepared by NASA will be sent back. NASA will send ISRO the necessary and strong coating around its scientific instrument for protection. Since this entire process is critical to the safety of the satellite, we have delayed the launch timetable. That means NISAR will now be launched from Sriharikota Space Station after August 2024.
SEC Director Nilesh Kumar Desai, while giving important technical information to Gujarat Samachar, said that ISRO's S-band Synthetic Aperture Radar (SAR) scientific instrument in NISAR has been developed by SEC. In other words, the contribution of SAC scientists and engineers is fundamental.
The NISAR satellite is basically a radar imaging mission. NISAR has scientific instruments like Synthetic Aperture Radar Instrument (SAR), L Band SAR, S Band SAR, Antenna Reflector etc. With the help of these state-of-the-art instruments, NISAR is capable of making observations both in space and on Earth. Only one centimeter can take a clear image of an object and its motion. Nisar has a total of two radars. One L band SAR – SAR – has been developed at NASA's Jet Propulsion Laboratory and the other S band SAR – SAR – has been developed by ISRO.
NASA NISAR Project Manager Phil Barela and ISRO's NISAR Project Manager CV Srikanth said that the main objective of NISAR is to study the exploratory and worrying changes taking place in the vast area of the Earth and its climate (climate change).
NISAR will remain in low Earth orbit at a distance of 747 km for three years and will provide useful information by closely observing the Earth's vast sphere. Broadly speaking, Nisar will prepare a special map of the Earth every 12 days. However, the satellite will remain operational in space for 90 days after which it will begin mapping the Earth.
This map shows the extent of Earth's ice sheets, how much sea levels have risen, the amount of underground water resources, seismic activity in the Earth's crust, dangerous activity in volcanoes, the huge ice sheets and glaciers melting in Antarctica. , and ice rivers in the Himalayas and snowy mountain ranges of Europe. It is important and useful in the context of changes in oceans and seas, tsunamis, landslides, dense forests, mountains, changes in agricultural lands and increasing amounts of carbon dioxide. Exploratory studies are to be done into the Earth's atmosphere and how it affects the entire ecosystem. This means that our NISAR satellite will truly perform the unique functions of a state-of-the-art observatory.