"NISAR"#upsc#isro#news#NASA#space#ias#ips
The NASA-ISRO Synthetic Aperture Radar (NISAR) mission is a groundbreaking collaboration between NASA and ISRO, aimed at advancing Earth observation capabilities. Here's a comprehensive overview:
Background and Purpose
NISAR was conceived to address critical challenges in understanding Earth's dynamic processes. It focuses on monitoring natural hazards, climate change, and ecosystem disturbances. The mission's data will be invaluable for scientific research, resource management, and disaster response.
Key Features
Dual-Frequency Radar: NISAR is the first satellite to use dual-frequency radar imaging (L-band and S-band), enabling high-resolution observations.
Advanced Technology: It features a 12-meter deployable mesh antenna and operates in a sun-synchronous orbit at an altitude of 747 km.
Global Coverage: The satellite will map the entire Earth every 12 days, providing consistent and timely data.
Mission Objectives
Study natural hazards like earthquakes, tsunamis, and landslides.
Monitor ice-sheet collapse and ecosystem disturbances.
Provide insights into soil moisture, vegetation biomass, and surface deformation.
Collaboration
NASA's Contributions: L-band radar, high-rate telecommunication subsystem, GPS receivers, and payload data subsystem.
ISRO's Contributions: S-band radar, satellite bus, and launch vehicle.
Applications
Climate change research.
Resource management.
Disaster response and mitigation.
Launch Details
Launch Date: Scheduled for May 20, 2025.
Launch Vehicle: GSLV Mk II.
Launch Site: Satish Dhawan Space Centre, India.
Significance
With an estimated cost of $1.5 billion, NISAR is one of the most expensive Earth-imaging satellites. Its data will be freely available, fostering global collaboration in addressing environmental and societal challenges.
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Background and Purpose
NISAR was conceived to address critical challenges in understanding Earth's dynamic processes. It focuses on monitoring natural hazards, climate change, and ecosystem disturbances. The mission's data will be invaluable for scientific research, resource management, and disaster response.
Key Features
Dual-Frequency Radar: NISAR is the first satellite to use dual-frequency radar imaging (L-band and S-band), enabling high-resolution observations.
Advanced Technology: It features a 12-meter deployable mesh antenna and operates in a sun-synchronous orbit at an altitude of 747 km.
Global Coverage: The satellite will map the entire Earth every 12 days, providing consistent and timely data.
Mission Objectives
Study natural hazards like earthquakes, tsunamis, and landslides.
Monitor ice-sheet collapse and ecosystem disturbances.
Provide insights into soil moisture, vegetation biomass, and surface deformation.
Collaboration
NASA's Contributions: L-band radar, high-rate telecommunication subsystem, GPS receivers, and payload data subsystem.
ISRO's Contributions: S-band radar, satellite bus, and launch vehicle.
Applications
Climate change research.
Resource management.
Disaster response and mitigation.
Launch Details
Launch Date: Scheduled for May 20, 2025.
Launch Vehicle: GSLV Mk II.
Launch Site: Satish Dhawan Space Centre, India.
Significance
With an estimated cost of $1.5 billion, NISAR is one of the most expensive Earth-imaging satellites. Its data will be freely available, fostering global collaboration in addressing environmental and societal challenges.
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NISAR NASA ISRO Synthetic Aperture Radar Earth Observation L-band S-band Climate Change Natural Hazards Ecosystem Disturbances Earth Dynamics Satellite Technology Space Collaboration Radar Imaging Disaster Response Resource Management Ice Sheet Monitoring Soil Moisture Vegetation Biomass Surface Deformation Global Mapping Space Mission Environmental Monitoring. UPSC ASPIRENT UPSC
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20 апреля 2025 г. 7:09:07
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