NISAR is a joint Earth-observing mission between NASA and the Indian Space Research Organization (ISRO). NASA and ISRO are providing two radars that are optimized each in their own way to allow the mission to observe a wider range of changes than either one alone.

The NASA-ISRO SAR (NISAR) Mission will measure Earth’s changing ecosystems, dynamic surfaces, and ice masses providing information about biomass, natural hazards, sea level rise, and groundwater, and will support a host of other applications.

2024年1月10日 · The satellite, called NISAR, will use an advanced radar system to deepen our understanding of deforestation, shrinking glaciers and sea ice loss, natural hazards, climate change, and other global vital signs.

An overview of UAVSAR's flight paths, and the NISAR simulated data that can be accessed in the database.

NISAR is a joint Earth-observing mission between NASA and the Indian Space Research Organization (ISRO) with the goal to make global measurements of the causes and consequences of land surface changes using advanced radar imaging.

NISAR is the first satellite mission to collect radar data in two microwave bandwidth regions, called the L-band and the S-band, to measure changes of our planet’s surface, including movements as small as centimeter.

The NISAR system comprises a dual frequency, fully polarimetric radar, with an imaging swath greater than 150 miles (240 km). This design permits complete global coverage every 12-days, allowing researchers to create time-series interferometric imagery and systematically map the changing surface of Earth.

NISAR’s global and rapid coverage will provide unprecedented opportunities to mitigate widespread damage and assess its extent. Detecting surface motions of our planet will help illuminate the processes occurring deep within.

Synthetic aperture radar (SAR) refers to a technique for producing fine-resolution images from a resolution-limited radar system. It requires that the radar be moving in a straight line, either on an airplane or, as in the case of NISAR, orbiting in space.

2023年3月8日 · NISAR will feature the most advanced radar system ever launched on a NASA science mission and will help us study natural hazards, melting sea ice, groundwater supply, and more. The NISAR Earth science mission has moved a step closer to its 2024 launch.