NASA and ISRO are collaborating on developing a satellite called NISAR, which will detect movements of the planet’s surface as small as 0.4 inches over areas about half the size of a tennis court.
About:
NISAR is an SUV-sized satellite that is being jointly developed by the space agencies of the US and India.
The name NISAR is short for NASA-ISRO-SAR. SAR here refers to the synthetic aperture radar that NASA will use to measure changes in the surface of the Earth.
Essentially, SAR refers to a technique for producing high-resolution images.
Because of the precision, the radar can penetrate clouds and darkness, which means that it can collect data day and night in any weather.
The partnership agreement was signed between NASA and ISRO in 2014.
NASA will provide one of the radars for the satellite, a high-rate communication subsystem for science data, GPS receivers and a payload data subsystem.
ISRO, on the other hand, will provide the spacecraft bus, the second type of radar (called the S-band radar), the launch vehicle and associated launch services.
The satellite will be launched in 2022 from the Satish Dhawan Space Center in Sriharikota, India, into a near-polar orbit.
It will scan the globe every 12 days over the course of its three-year mission of imaging the Earth’s land, ice sheets and sea ice to give an “unprecedented” view of the planet.
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