The NISAR satellite mission, a landmark collaboration between NASA and ISRO, is primarily designed to utilize which specific technology for high-resolution Earth observation?

Explanation

Synthetic Aperture Radar (SAR). The NISAR (NASA–ISRO Synthetic Aperture Radar) mission is designed to use dual-frequency SAR technology (L-band by NASA and S-band by ISRO) for high-resolution, all-weather, day-and-night Earth observation. It will monitor land deformation, earthquakes, volcanoes, glaciers, forests, soil moisture, and coastal changes. The mission was approved in 2014, developed jointly by NASA (USA) and ISRO (India), with launch planned from Satish Dhawan Space Centre, Sriharikota.