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NISAR satellite: This India-US mission can see through everything with bus-sized radar and detects even small changes on Earth
NISAR satellite: This India-US mission can see through everything with bus-sized radar and detects even small changes on Earth

Time of India

time5 hours ago

  • Science
  • Time of India

NISAR satellite: This India-US mission can see through everything with bus-sized radar and detects even small changes on Earth

Nisar Launch Date: India and the United States are collaborating on the NISAR mission, set to launch on July 30, 2025. This joint Earth observation satellite, equipped with dual-frequency radar, will monitor Earth's surface changes with high precision. NISAR's data will support various applications, including disaster response, climate change mitigation, and resource management, providing valuable insights for scientists and policymakers. Tired of too many ads? Remove Ads First satellite with dual-frequency radar What NISAR will monitor NISAR will observe Earth's surface changes with high precision. The satellite will support a range of applications: Ground deformation: It will monitor earthquakes, volcanic activity, and landslides by detecting centimeter-level changes in Earth's crust. Ice and glaciers: The satellite will track polar ice sheet movement and melting to inform climate models. Ecosystems and agriculture: It will assess changes in forests, crop growth, and vegetation patterns. Hydrology: It will track soil moisture and surface water changes for water resource management. Disaster response: Real-time data will aid emergency response to events like floods, cyclones, wildfires, and tsunamis. Coastal and maritime surveillance: It will monitor coastal erosion, sea ice, and ship movements. Nisar's Massive Daily Output: Will generate ~80 terabytes of data products per day. Data equivalent to ~150 standard 512 GB hard drives daily. Cloud-based processing and open access to data. Tired of too many ads? Remove Ads L-band radar (NASA) uses longer wavelengths to penetrate through vegetation, soil, and ice, making it useful for monitoring underground features and environmental changes. S-band radar (ISRO) uses shorter wavelengths, which are more responsive to surface-level changes, enabling detailed analysis of crops, snow cover, and soil deformation. Collaboration over a decade Strategic and scientific value India and the United States are set to launch their first joint Earth observation satellite, the NASA-ISRO Synthetic Aperture Radar ( NISAR ), on July 30, 2025, at 17:40 IST. The satellite, weighing 2,392 kilograms, will be launched onboard ISRO's GSLV-F16 rocket from the Satish Dhawan Space Centre in Sriharikota. The launch vehicle will place the satellite into a 743 km sun-synchronous orbit, marking a significant milestone in international collaboration in space NISAR satellite will be the first in the world to operate a dual-frequency Synthetic Aperture Radar, using both NASA's L-band and ISRO's S-band radars. These will be mounted on a 12-meter unfurlable mesh reflector antenna developed by NASA and integrated into ISRO's modified I3K satellite mission uses SweepSAR technology to capture wide-swath, high-resolution radar images. With a swath width of 242 kilometers and an imaging resolution of 5 to 10 meters, NISAR will revisit the same location every 12 days, providing consistent, all-weather, day-and-night radar frequency on board serves a specific purpose:The NISAR mission is a result of more than ten years of collaboration between ISRO and NASA's Jet Propulsion Laboratory (JPL). The two space agencies have worked jointly to design, develop, and test the satellite to ISRO, 'NISAR can detect even small changes in the Earth's surface such as ground deformation, ice sheet movement and vegetation dynamics.'NASA and ISRO aim to use this data to support global efforts in food security, urban development, climate change mitigation, and disaster combining resources and radar expertise, the mission is expected to benefit scientists, policymakers, and disaster-response teams worldwide. The continuous flow of data from NISAR is intended to support long-term Earth observation and environmental monitoring mission is expected to contribute long-term insights into Earth's dynamic processes, supporting better decision-making for sustainable development.

NISAR to be launched on July 30
NISAR to be launched on July 30

Indian Express

timea day ago

  • Science
  • Indian Express

NISAR to be launched on July 30

The much-awaited launch of NISAR — an earth observation satellite jointly developed by NASA and ISRO — is set to take place on July 30 at 5:40 pm from the country's only spaceport in Sriharikota, Andhra Pradesh. The satellite will be launched on the GSLV-F16 and be put in a 734 km sun synchronous orbit — an orbit in which the satellite reaches over a place at the same time each day. The satellite will scan the entire globe every 12 days, proving a series of very detailed images of the Earth's surface. NISAR, which stands for NASA-ISRO Synthetic Aperture Radar, will provide an unprecedented view of the planet. Weighing 2,392 kg it will be the first satellite ever to observe the Earth in two frequencies — NASA's L-band and ISRO's S-band. 'Each system's signal is sensitive to different sizes of features on Earth's surface, and each specializes in measuring different attributes, such as moisture content, surface roughness, and motion,' according to NASA. Putting two radar systems on a single satellite is a unique engineering feat because the two systems require different sets of hardware, and yet have to function in a complementary fashion without interfering with one another. This would mean that the satellite would be able to provide very high-resolution data, in all types of weather conditions, and both during the day and the night. The satellite is powerful enough to capture changes as small as one centimetre in size during its repeated observations over the same terrain. It will therefore be able to study the dynamic processes happening on Earth's surface, like retreat of glaciers, movement of sea ice, the path of a storm, changes in vegetation and forest cover, and even the movements during earthquakes and volcanoes. Scientists expect this satellite to provide new insights into our understandings of processes like climate change or natural hazards and better prepare for them. It can also help with practical applications such as tracking the changes in soil moisture or mapping surface water levels. Costing around USD 1.5 billion, it is the most expensive earth observation satellite in the world, with ISRO contributing Rs 469.4 crores for the satellite. The Indian space agency will also incur costs in launching the satellite. 'The NISAR launch is the result of strong technical cooperation between ISRO & NASA/JPL technical teams for more than a decade,' the space agency said. There have been several delays in the launch of the satellite, with the scheduled launch last year being pushed after technical issues. There was a need to fix the one of the key components of the satellite — a 12-metre unfurlable antennae. The satellite was shipped back to the United States. Anonna Dutt is a Principal Correspondent who writes primarily on health at the Indian Express. She reports on myriad topics ranging from the growing burden of non-communicable diseases such as diabetes and hypertension to the problems with pervasive infectious conditions. She reported on the government's management of the Covid-19 pandemic and closely followed the vaccination programme. Her stories have resulted in the city government investing in high-end tests for the poor and acknowledging errors in their official reports. Dutt also takes a keen interest in the country's space programme and has written on key missions like Chandrayaan 2 and 3, Aditya L1, and Gaganyaan. She was among the first batch of eleven media fellows with RBM Partnership to End Malaria. She was also selected to participate in the short-term programme on early childhood reporting at Columbia University's Dart Centre. Dutt has a Bachelor's Degree from the Symbiosis Institute of Media and Communication, Pune and a PG Diploma from the Asian College of Journalism, Chennai. She started her reporting career with the Hindustan Times. When not at work, she tries to appease the Duolingo owl with her French skills and sometimes takes to the dance floor. ... Read More

ISRO to launch NISAR on July 30
ISRO to launch NISAR on July 30

New Indian Express

timea day ago

  • Science
  • New Indian Express

ISRO to launch NISAR on July 30

BENGALURU: After the Axiom-4 mission, the next space mission that all space scientists and enthusiasts are waiting for is NISAR (NASA-ISRO Synthetic Aperture Radar), which will be launched on July 30. The Indian Space Research Organisation (ISRO) on July 21, announced that the satellite developed in coordination with NASA, is scheduled for launch at 5.40pm from Sriharikota on July 30. The ISRO's GSLV-F16 will launch the NISAR satellite into the 743kms sun- synchronous orbit at an inclination of 98.4 degrees. This is India's first satellite that will observe the Earth with a dual-frequency Synthetic Aperture Radar. Weighing 2,392 kg, the unique satellite will use NASA's 12m unflurable mesh reflector antenna.

NASA-ISRO satellite NISAR launch on July 30
NASA-ISRO satellite NISAR launch on July 30

Time of India

timea day ago

  • Science
  • Time of India

NASA-ISRO satellite NISAR launch on July 30

The NASA-ISRO collaboration, NISAR, is set to launch from Satish Dhawan Space Centre. The launch is scheduled for July 30. GSLV-F16 will deploy the satellite into a Sun-synchronous orbit. NISAR will use advanced radar technology to scan the Earth. It will provide all-weather, day and night data. Tired of too many ads? Remove Ads Tired of too many ads? Remove Ads The NASA-ISRO joint satellite NISAR will be launched from Satish Dhawan Space Centre, Sriharikota, on July 30 at 5.40 pm, the space agency said on to ISRO, GSLV-F16 will inject the Synthetic Aperture Radar (NISAR) satellite into a 743 km Sun-synchronous orbit with an inclination of 98.4 will observe Earth with a swath of 242 km and high spatial resolution, using SweepSAR technology for the first time, ISRO said in a satellite will scan the entire globe and provide all weather, day and night data at 12-day interval and enable a wide range of applications, it can detect even small changes in the Earth's surface such as ground deformation, ice sheet movement and vegetation dynamics, according to the space applications include sea ice classification, ship detection, shoreline monitoring, storm characterisation, changes in soil moisture, mapping and monitoring of surface water resources and disaster weighing 2,392 kg, is a unique Earth observation satellite and the first satellite to observe the Earth with a dual frequency Synthetic Aperture Radar (NASA's L-band and ISRO's S-band) both using NASA's 12m unfurlable mesh reflector antenna, integrated to ISRO's modified I3K satellite NISAR launch is the result of strong technical cooperation between ISRO & NASA/JPL technical teams for more than a decade, the release said.

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