What Makes NISAR Satellite Unique with Its Two Radar Eyes?
Click to start listening
Synopsis
Discover how the NISAR satellite, a groundbreaking collaboration between ISRO and NASA, is set to revolutionize Earth observation with its innovative dual radar systems that operate independently of sunlight.
Key Takeaways
- NISAR features two radar systems for all-weather observations.
- It operates independently of sunlight, enhancing its monitoring capabilities.
- The satellite will scan the globe every 12 days.
- It can detect minute changes in the Earth’s surface.
- This mission represents a significant international collaboration between ISRO and NASA.
New Delhi, July 30 (NationPress) - The upcoming launch of the Indian Space Research Organisation (ISRO) and NASA's collaborative Earth observation satellite, known as NISAR, features two radar eyes and operates independently of reflected sunlight for its monitoring capabilities, according to Dr. BR Guruprasad, a former ISRO scientist and Director of the Jawaharlal Nehru Planetarium.
NISAR marks the inaugural joint satellite mission between ISRO and NASA.
It is scheduled for launch aboard the GSLV-F16 rocket from the Satish Dhawan Space Centre (SDSC SHAR) located in Sriharikota, Andhra Pradesh, at precisely 5:40 PM.
“NISAR is a remote sensing satellite equipped with two radar systems, which are not camera-based. This allows it to function without relying on reflected sunlight,” Guruprasad explained to IANS.
“The satellite’s radar technology enables it to conduct all-weather observations, gathering images both day and night, unaffected by cloud cover,” he added.
The radar systems onboard NISAR are designated as the L-band and S-band. These systems will transmit radar pulses back to Earth from space, assisting scientists in comprehending changes occurring on our planet.
Additionally, Guruprasad noted that “NISAR has the ability to capture images from an altitude of approximately 750 kilometers with a coverage span of about 240 kilometers wide, achieving detail levels between three to ten meters.
Both organizations, NASA and ISRO, have previously excelled in developing Earth observation and weather satellites, but according to the former ISRO scientist, “NISAR is an outstanding example of international collaboration” that promises benefits for all of humanity.
“The partnership between two nations with strong Earth observation capabilities is not just beneficial for them but for everyone, as it will transform our understanding of Earth,” the veteran scientist shared.
While India has previously launched over three radar-equipped satellites, “NISAR stands out due to its dual radar systems within a single satellite,” Guruprasad stated.
Weighing in at 2,392 kilograms, the satellite will be propelled into orbit by India’s GSLV-F16 rocket.
This will be the first mission of the Geosynchronous Satellite Launch Vehicle (GSLV) into a Sun-Synchronous Orbit (SSO).
NISAR is set to scan the entire globe every 12 days, offering high-resolution, all-weather, day-and-night data.
It is capable of detecting subtle variations in the Earth's surface, including ground deformation, ice sheet movements, and vegetation changes.
This mission will facilitate numerous critical applications such as sea ice monitoring, ship detection, storm tracking, soil moisture assessment, surface water mapping, and disaster response.
Point of View
The launch of the NISAR satellite symbolizes a significant milestone in international cooperation in space exploration. This mission not only enhances India's capabilities but also strengthens global scientific collaboration, promising benefits for all of humanity.
NationPress
31/07/2025
Frequently Asked Questions
What is the purpose of the NISAR satellite?
The NISAR satellite is designed for Earth observation, utilizing two radar systems that allow it to monitor changes on the Earth's surface day and night, regardless of weather conditions.
When is the NISAR satellite scheduled to launch?
NISAR is set to launch aboard the GSLV-F16 rocket from Satish Dhawan Space Centre in Sriharikota, Andhra Pradesh, on July 30 at 5:40 PM.
How does NISAR differ from previous satellites?
NISAR is unique because it incorporates both L-band and S-band radar systems within a single satellite, allowing for comprehensive all-weather data collection.
What are some applications of the data collected by NISAR?
NISAR's data will support a range of applications, including sea ice monitoring, storm tracking, vegetation dynamics, and disaster response efforts.
How high will NISAR operate from the Earth's surface?
NISAR will operate from an altitude of about 750 kilometers above Earth.
