Dr. Jitendra Singh, the Union Minister of State for Science & Technology, announced in the Rajya Sabha that NASA and ISRO have collaboratively built an earth science satellite called NISAR (NASA-ISRO Synthetic Aperture Radar). The satellite’s primary objectives are to design, develop, and launch a dual-frequency (L and S band) radar imaging satellite, and to explore new application areas using L & S Band microwave data, particularly in surface deformation studies, terrestrial biomass structure, natural resource mapping and monitoring, and research on the dynamics of ice-sheets, glaciers, forests, oil slicks, etc.
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About the NISAR Satellite:
The NISAR satellite is equipped with an I-3K bus and a SAR instrument that uses the innovative Sweep SAR technique. It operates in both L and S bands and has polarimetric configuration, providing a wide swath and high resolution. The satellite will travel in a sun synchronous orbit at a height of 747 km and an inclination of 98.4 degrees, completing a 12-day cycle. NASA is responsible for providing the L-Band SAR payload, high precision GPS, and a 12m unfurlable antenna, while ISRO is responsible for the S-Band SAR payload, spacecraft bus, and launch facilitation. As of February 2023, ISRO has spent Rs. 469.40 Crore on the realization of the NISAR satellite, excluding launch costs.
Important Takeaways for All Competitive Exams:
- ISRO Chairman: S. Somanath;
- ISRO foundation Date: 15th August, 1969;
- ISRO Founder: Dr. Vikram Sarabhai.
- NASA Headquarters: Washington, D.C., United States;
- NASA Founded: 29 July 1958, United States;
- NASA Administrator: Bill Nelson.
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