Latest news with #GeosynchronousSatelliteLaunchVehicle-F16
Hans India
33 minutes ago
- Science
- Hans India
ISRO to launch NISAR sat tomorrow
Chennai: The highly anticipated NASA-ISRO Synthetic Aperture Radar (NISAR) satellite, a collaborative Earth observation mission between the United States and India, is slated for launch on July 30 at 5:40 pm IST. The 2,400-kg satellite will be carried into orbit by ISRO's Geosynchronous Satellite Launch Vehicle-F16 (GSLV-F16) from the Satish Dhawan Space Centre in Sriharikota, Andhra Pradesh. However, ISRO has clarified that while the launch is imminent, NISAR's dedicated scientific operations will not begin until approximately three months after it is successfully placed in orbit. This initial period will be critical for preparing the advanced observatory. According to ISRO, the NISAR mission is structured into distinct phases. Following the Launch Phase on July 30, the satellite will enter its Deployment Phase. This crucial stage involves the complex in-orbit unfurling of NISAR's 12-meter diameter reflector, a key component developed by NASA's Jet Propulsion Laboratory (JPL), which will extend 9 meters away from the satellite. Subsequently, the mission will enter a 90-day Commissioning Phase, also known as "In-Orbit Checkout (IOC)." This period is solely dedicated to meticulously preparing the observatory for its scientific tasks. It will involve initial checks and calibrations of the satellite's core systems, followed by a thorough engineering checkout of the payload and instruments by JPL. Only after the successful completion of this commissioning phase will the Science Operations Phase commence, extending for the duration of the mission's life. During this phase, NISAR's science orbit will be precisely maintained through regular maneuvers, strategically planned to minimize interference with scientific observations. Extensive calibration and validation (CalVal) activities will also be ongoing. The detailed observation plan for both the L-band and S-band instruments, along with all necessary engineering activities, are being meticulously generated prior to launch through continuous coordination between JPL and ISRO. NISAR is poised to be a groundbreaking mission, providing unprecedented, high-resolution, all-weather, day-and-night data to observe Earth's changing ecosystems, dynamic surfaces, and ice masses. This data is expected to revolutionize our understanding of natural hazards like earthquakes, tsunamis, volcanoes, and landslides, as well as providing critical information for studies on climate change, agriculture, and water resources.
United News of India
14 hours ago
- Science
- United News of India
INDO-US satellite NISAR will start scientific operations after 90 days
Chennai, July 28 (UNI): The highly anticipated NASA-ISRO Synthetic Aperture Radar (NISAR) satellite, a collaborative Earth observation mission between the United States and India, is slated for launch on July 30 at 5:40 pm IST. The 2,400 kg satellite will be carried into orbit by ISRO's Geosynchronous Satellite Launch Vehicle-F16 (GSLV-F16) from the Satish Dhawan Space Centre in Sriharikota, Andhra Pradesh. However, ISRO has clarified that while the launch is imminent, NISAR's dedicated scientific operations will not begin until approximately three months after it is successfully placed in orbit. This initial period will be critical for preparing the advanced observatory. According to ISRO, the NISAR mission is structured into distinct phases. Following the Launch Phase on July 30, the satellite will enter its Deployment Phase. This crucial stage involves the complex in-orbit unfurling of NISAR's 12-meter diameter reflector, a key component developed by NASA's Jet Propulsion Laboratory (JPL), which will extend 9 meters away from the satellite. Subsequently, the mission will enter a 90-day Commissioning Phase, also known as "In-Orbit Checkout (IOC)." This period is solely dedicated to meticulously preparing the observatory for its scientific tasks. It will involve initial checks and calibrations of the satellite's core systems, followed by a thorough engineering checkout of the payload and instruments by JPL. Only after the successful completion of this commissioning phase will the Science Operations Phase commence, extending for the duration of the mission's life. During this phase, NISAR's science orbit will be precisely maintained through regular maneuvers, strategically planned to minimize interference with scientific observations. Extensive calibration and validation (CalVal) activities will also be ongoing. The detailed observation plan for both the L-band and S-band instruments, along with all necessary engineering activities, are being meticulously generated prior to launch through continuous coordination between JPL and ISRO. NISAR is poised to be a groundbreaking mission, providing unprecedented, high-resolution, all-weather, day-and-night data to observe Earth's changing ecosystems, dynamic surfaces, and ice masses. This data is expected to revolutionize our understanding of natural hazards like earthquakes, tsunamis, volcanoes, and landslides, as well as providing critical information for studies on climate change, agriculture, and water resources. UNI VJ AAB
United News of India
15 hours ago
- Science
- United News of India
NISAR satellite: About 10-year labour of ISRO-NASA
Chennai, July 28 (UNI) A decade-old labour of the Indian Space Research Organisation (ISRO) and National Aeronautics and Space Administration (NASA) gave birth to the NASA ISRO Synthetic Aperture Radar (NISAR) satellite. The NASA-ISRO Synthetic Aperture Radar (NISAR) satellite, a testament to equal partnership forged on September 30, 2014, is ready for liftoff from India's Sriharikota rocket port aboard the Geosynchronous Satellite Launch Vehicle-F16 (GSLV-F16). The complex payloads and mainframe systems have been designed, developed, qualified and realised over a period of 8 to 10 years, said ISRO. The S-Band SAR and L-Band SAR were independently developed, integrated and tested at ISRO and Jet Propulsion Laboratory (JPA), NASA respectively. The Integrated Radar Instrument Structure (IRIS), consisting of S – Band and L – Band SAR and other payload elements were integrated and tested at JPL/NASA and delivered to ISRO. Mainframe satellite elements and payloads were assembled, integrated and tested at ISROs U R Rao Satellite Centre, Bengaluru. The spacecraft is built around ISRO's I-3K Structure. It carries two major Payloads viz., L & S- Band Synthetic Aperture Radar (SAR).The S-band Radar system, data handling & high- speed downlink system, the spacecraft and the launch system are developed by ISRO. The L-band Radar system, high speed downlink system, the Solid-State Recorder, GPS receiver, the 9m Boom hoisting the 12m reflector are delivered by NASA. Further, ISRO takes care of the satellite commanding and operations, while NASA will provide the orbit maneuver plan and Radar operations plan. NISAR mission will be aided with ground station support of both ISRO and NASA for downloading of the acquired images, which after the necessary processing will be disseminated to the user community. The data acquired through S-band and L-band SAR from a single platform will help the scientists to understand the changes happening to Planet Earth. The about 10-year labour is slated to be delivered by an Indian rocket Geosynchronous Satellite Launch Vehicle-F16 (GSLV-F16) on July 30, 2025 evening from India's Sriharikota rocket port. UNI VJ PRS
The Print
3 days ago
- Science
- The Print
ISRO and NASA's billion-dollar baby is ready to launch. NISAR will watch every inch of Earth
The project is significant not only because it marks the first collaboration between ISRO and NASA on this scale, but also because of the satellite's ability to scan all of Earth's land and ice-covered surfaces twice every 12 days. This will help record both large and small climatic and geographical changes over time. After a delay of over a year, the NASA-ISRO Synthetic Aperture Radar ( NISAR ) mission is now scheduled to launch on 30 July from the Satish Dhawan Space Centre in Sriharikota, Andhra Pradesh, aboard India's heavy-lift rocket, the Geosynchronous Satellite Launch Vehicle-F16 (GSLV-F16). New Delhi: The Indian Space Research Organisation and the United States' National Aeronautics and Space Administration are set to launch a first-of-its-kind Earth observation satellite, designed to survey the planet like never before. As an equal partner in NISAR's development, ISRO is consolidating India's position in the global space sector as a trusted and dependable business associate. It is for this reason that the ISRO-NASA partnered NISAR satellite is ThePrint's Newsmaker of the Week. Also read: Lift the veil, abandon Soviet-era approach. Indian science community wants ISRO to up its PR game What does NISAR promise? NISAR promises to usher in a new era of global Earth observation capabilities. The high-resolution images it provides will enable scientists to better understand the processes behind natural hazards and catastrophic events such as earthquakes, landslides, and volcanic eruptions. Its ability to penetrate cloud cover will be key in improving emergency responses during weather-related disasters like floods, storms, and hurricanes. According to NASA, the NISAR satellite will also provide crucial data on changes in ice sheets, glaciers, and sea ice, and enhance scientific understanding of how deforestation, permafrost loss, and fires affect the carbon cycle. 'The data will be accessible to all users across a range of disciplines, with potential applicability in disaster response, infrastructure monitoring and agricultural decision support,' NASA said in a mission document. Data from NISAR could change our approach to disaster preparedness and management. All data from the satellite will be available within one to two days of observation. In emergencies such as natural disasters, the turnaround time will shrink to just a few hours. NASA's Sanghamitra Dutta, the programme executive for NISAR, highlighted the massive scale of data generation. 'NISAR will capture over 4,300 GB of Earth imagery each day. You will need nearly eight 512 GB laptops to hold such a volume of data,' she said. Over its expected lifespan of more than three years, NISAR satellite will accumulate over 5,00,000 GB of data—enough to fill approximately 3,000 laptops. At a recent press conference, NASA announced that 80 organisations, both public and private, have already signed up to use NISAR data. 'Remote-sensing missions like NISAR are storytellers about how the Earth and humans interact, and how we connect with the planet,' said Paul Rosen, project scientist for NISAR. 'NISAR is a truly unique storyteller,' he added. The partnership—first conceptualised in 2007 and finally inked in 2014—is the most expensive Earth observation satellite mission ever, with a price tag of $1.5 billion. Of the total project cost, ISRO has contributed Rs 469.4 crore and will also cover the launch costs. Also read: Rakesh Sharma to Shubhanshu Shukla—India's space programme is entering a bold new era NISAR satellite—the technology NISAR is being touted as the most powerful Synthetic Aperture Radar (SAR) satellite ever developed. At the press conference, NASA revealed that the satellite will be roughly the size of a pickup truck. Its main body houses engineering systems and a first-of-its-kind dual radar payload—an L-band radar with a 10-inch wavelength, and an S-band radar, also with a 10-inch wavelength. India's contribution is significant: the S-band radar was built by the ISRO Space Applications Centre in Ahmedabad. It was shipped to NASA's Jet Propulsion Laboratory (JPL) in 2021, where the L-band radar was being developed. NASA and ISRO scientists integrated the two systems between 2021 and 2022. The satellite was then sent to India in March 2023 for final preparations and launch. NISAR launch delay This 9,000-mile-long partnership between India and the US faced its share of hurdles. NISAR satellite, which took over a decade to come together, was first scheduled for launch in 2024. But technical faults led to a delay. Just weeks before the initial launch window in March-April 2024, engineers discovered a problem with the large deployable antenna. The component had to be returned to the US to protect the spacecraft's reflector—a 12-metre-wide antenna—while in its stowed configuration. 'Testing and analysis identified a potential for the reflector to experience higher-than-previously-anticipated temperatures in its stowed configuration in flight,' NASA said in a statement. To mitigate this, engineers applied a special coating to increase the antenna's reflectivity and reduce heat absorption. Although NASA resolved the issue within a few months, the wait for NISAR's launch did not end. Between October 2024 and February 2025, the launch was deemed unfeasible. During this period, the Sun's position would expose the satellite to alternating cycles of heat and shadow, potentially causing temperature fluctuations that could jeopardise the satellite's boom and radar antenna. But now, NISAR's time has finally come. The world is about to receive a treasure trove of Earth data like never before. And along with ISRO and NASA, the entire scientific community is watching with excitement. (Edited by Prashant)
