Q. Consider the following statements regarding NISAR:
1.It is a joint Earth-Observation mission by ISRO and NASA.
2. It will be able to observe minor changes in land, vegetation, and cryosphere.
3. It is a dual band radar imaging mission.
Which of the above statements is/are correct?

[A] 1 and 2 only

[B] 2 and 3 only

[C] 1 and 3 only

[D] 1, 2 and 3u00a0

Answer: D

All statements are correct 

About NISAR (NASA-ISRO Synthetic Aperture Radar) Mission: 

  • NISAR is a joint Earth-Observation mission between ISRO and NASA. It aims to make global measurements of land surface changes using advanced radar imaging. 
  • Objective: To improve understanding of the impact of climate change on Earth’s changing Ecosystems, land and coastal processes, land deformations, and Cryosphere. 
  • Features: It is a dual-band (L-band and S-band) Radar imaging mission with the capability of full polarimetric and interferometric modes of operation, to observe minor changes in land, vegetation, and cryosphere. 
  • Contributions: NASA is developing L-band SAR and associated systems. While ISRO is developing S-band SAR, spacecraft bus, the launch vehicle, and associated launch services. 
  • Launch Year: NISAR is proposed to be launched in early 2023.