The NASA-ISRO Synthetic Aperture Radar (NISAR) is a joint Earth-observing mission by NASA and ISRO. The mission aims at co-developing a dual-frequency synthetic aperture radar on an Earth observation satellite. The NASA-ISRO SAR mission will observe Earth and measure its changing ecosystem and masses globally. It is the world’s most expensive imaging-satellite and the two space agencies intend to launch the satellite by 2022.
The key factors and characteristics of the mission are given below:
It is a dual-frequency Radar imaging satellite and is using both L-Brand and S-Brand Radar frequencies that will map Earth every 12 days from two directions. The S-Brand Radar is being built by ISRO and the L-Brand Radar is being built by NASA
The satellite is likely to be launched from Indian soil. The launch site is Satish Dhawan Space Center or Sriharikota Range, Andhra Pradesh
The main objective of this research is to make global measurements of the causes and consequences of land surface changes. This includes:
Imbalance in the Ecosystem
Natural Hazards including earthquakes, tsunamis, volcanoes, and landslides.
The mission is also expected to open up paths for the future joint mission between the two Space Agencies.
Shukrayaan-1
Shukrayaan-1 is a proposed mission of Indian Space Research Organisation (ISRO).
It is a mission to study Venus for more than four years. Scientific objectives: Investigation of the surface processes and shallow subsurface stratigraphy; and solar wind interaction with Venusian Ionosphere, and studying the structure, composition, and dynamics of the atmosphere.