The NASA-ISRO Synthetic Aperture Radar (NISAR) Earth-observing radar satellite has despatched the first images of Earth’s surface because the joint mission between NASA and ISRO approaches full science operations later this yr.
NASA mentioned that the images from the spacecraft, which was launched by ISRO on July 30, show the extent of element with which NISAR scans Earth to supply distinctive, actionable info to decision-makers in a various vary of areas, together with catastrophe response, infrastructure monitoring, and agricultural administration.
“By understanding how our home planet works, we can produce models and analysis of how other planets in our solar system and beyond work as we prepare to send humanity on an epic journey back to the Moon and onward to Mars,” mentioned NASA Associate Administrator Amit Kshatriya.
Fruits of collaboration
He added that the profitable seize of these first images from NISAR is a exceptional instance of how partnership and collaboration between two nations, on reverse sides of the world, can obtain nice issues collectively for the profit of all.
NASA mentioned that on August 21, the satellite’s L-band artificial aperture radar (SAR) system, which was offered by NASA’s Jet Propulsion Laboratory in Southern California, captured Mount Desert Island on the Maine coast.
“Dark areas represent water, while green areas are forest, and magenta areas are hard or regular surfaces, such as bare ground and buildings. The L-band radar system can resolve objects as small as 15 feet (five metres), enabling the image to display narrow waterways cutting across the island, as well as the islets dotting the waters around it,” NASA mentioned.
It added that on August 23, the L-band SAR captured knowledge of a portion of northeastern North Dakota straddling Grand Forks and Walsh counties.
“The image shows forests and wetlands on the banks of the Forest River passing through the centre of the frame from west to east and farmland to the north and south. The dark agricultural plots show fallow fields, while the lighter colors represent the presence of pasture or crops, such as soybean and corn. Circular patterns indicate the use of centre-pivot irrigation,” it added.
The U.S. area company additional mentioned that the images exhibit how the L-band SAR can discern what kind of land cowl — low-lying vegetation, timber, and human constructions — is current in every space.
Gain and loss of forests
“This capability is vital both for monitoring the gain and loss of forest and wetland ecosystems, as well as for tracking the progress of crops through growing seasons around the world,” it mentioned.
