Category: Space warfare

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712: EYES IN THE SKY: OPERATION SINDOOR SPURS INDIA’S SPACE DEFENCE SURGE

 

My Article was published in the “Life of Soldier”  Journal, Aug 25.

 

In the wake of Operation Sindoor, conducted from May 7 to 10, 2025, India has launched an ambitious mission to enhance its space-based defence capabilities. The operation, a retaliatory strike against terror camps in Pakistan following the devastating Pahalgam attack on April 22, 2025, underscored the critical need for “deep” and “persistent” surveillance over adversarial territories. This necessity has prompted India to accelerate the deployment of 52 dedicated defence satellites under the Space-Based Surveillance (SBS) Phase-3 programme, which was approved in October 2024 with a budget of Rs 26,968 crore. Coupled with the finalisation of a comprehensive military space doctrine, India is poised to transform its strategic surveillance and defence framework, reducing reliance on foreign assets.

 

The Catalyst: Operation Sindoor

Operation Sindoor was a pivotal moment in India’s defence strategy, highlighting both the strengths and limitations of its current surveillance capabilities. The operation targeted terror infrastructure in Pakistan-occupied territories, relying on satellite imagery from foreign providers. While these assets provided critical intelligence, the operation exposed India’s dependence on external sources for real-time, high-resolution imagery. This dependency posed risks, including delayed access to data and potential vulnerabilities in data security, especially during high-stakes military engagements.

The Pahalgam attack, which killed 29 people, including civilians and security personnel, revealed gaps in India’s ability to monitor cross-border activities with the granularity and persistence required for pre-emptive or retaliatory actions. The subsequent success of Operation Sindoor, while a tactical victory, emphasised the need for an indigenous, robust, and self-reliant space-based surveillance system. The operation’s reliance on foreign satellites underscored the urgency to develop a dedicated constellation capable of providing continuous, high-resolution coverage of strategic areas, including Pakistan, China, and the Indian Ocean Region (IOR).

 

The Space-Based Surveillance (SBS) Phase-3 Programme

The Indian government had approved the SBS Phase-3 programme in October 2024, allocating Rs 26,968 crore to deploy 52 defence satellites. This ambitious initiative, led by the Indian Space Research Organisation (ISRO) in collaboration with private industry, aims to establish a comprehensive space-based intelligence, surveillance, and reconnaissance (ISR) network by 2029. The programme is structured to leverage both public and private sector expertise, with ISRO tasked with launching 21 satellites and three private companies deploying the remaining 31. Key Features of the Programme are as follows:-

 

Satellite Constellation. The 52 satellites will operate in a mix of low Earth orbit (LEO) and geostationary orbit (GEO). LEO satellites, positioned at altitudes between 500 and 900 km, will provide high-resolution imagery (up to 0.3 meters), ideal for detailed monitoring of military installations, troop movements, and infrastructure. GEO satellites, stationed at 36,000 km, will provide continuous wide-area coverage, which is critical for tracking maritime activities in the IOR and monitoring large-scale developments along India’s borders.

 

Technological Capabilities. The satellites will be equipped with advanced synthetic aperture radar (SAR) and electro-optical sensors, enabling all-weather, day-and-night imaging. SAR systems are exceptionally vital for penetrating cloud cover and monitoring during adverse weather conditions, a frequent challenge in regions like the Himalayas. The constellation will also incorporate secure communication links to ensure real-time data transmission to ground stations and military command centers.

 

Public-Private Partnership. The involvement of private companies marks a significant shift in India’s space strategy. Companies like Tata Advanced Systems, Larsen & Toubro, and startups such as Pixxel and Skyroot Aerospace are expected to contribute to satellite manufacturing and launch services. This collaboration aims to accelerate deployment, reduce costs, and foster innovation in India’s burgeoning private space sector.

 

Timeline and Deployment.  The first satellite launch is scheduled for April 2026, with the entire constellation expected to be operational by 2029. The phased rollout will prioritise coverage of high-threat areas, including the Line of Actual Control (LAC) with China and the Line of Control (LoC) with Pakistan, before expanding to broader regional surveillance.

 

Strategic Imperatives

The SBS Phase-3 programme is driven by India’s need to counter growing regional security challenges. China’s expansive space program, with over 1,000 satellites, including advanced ISR and anti-satellite (ASAT) capabilities, poses a significant threat. Beijing’s ability to disrupt or destroy satellites, demonstrated by its 2007 ASAT test, underscores the need for India to develop resilient and redundant space assets. The People’s Liberation Army (PLA) has integrated space-based ISR into its military doctrine, enabling precise targeting and real-time battlefield awareness, as seen in its activities along the LAC.

Pakistan, while less advanced in space technology, relies on Chinese support for its satellite capabilities, including the Pakistan Remote Sensing Satellite (PRSS-1). The growing China-Pakistan nexus necessitates enhanced surveillance to monitor joint military exercises, infrastructure development (e.g., the China-Pakistan Economic Corridor), and potential terror activities emanating from Pakistani territory.

The IOR, a critical maritime domain, is another focus area. With China’s increasing naval presence and the strategic importance of chokepoints like the Malacca Strait, India requires persistent surveillance to safeguard its maritime interests and counter piracy, smuggling, and hostile naval operations.

 

Complementary Initiatives: HAPS and Beyond

In addition to the satellite programme, the Indian Air Force (IAF) is pursuing three high-altitude platform systems (HAPS) aircraft to complement space-based ISR. These solar-powered, unmanned platforms, operating at altitudes of 18-20 km, can remain airborne for weeks, providing persistent surveillance over specific areas. HAPS aircraft are particularly suited for monitoring border regions and can serve as a cost-effective alternative to satellites for localised ISR missions.

The IAF is also exploring the integration of artificial intelligence (AI) and machine learning (ML) to process vast amounts of satellite data. AI-driven analytics can identify patterns, detect anomalies, and provide actionable intelligence in real time, enhancing India’s ability to respond to threats swiftly.

 

Challenges and Opportunities

While the SBS Phase-3 programme and the military space doctrine represent a significant leap forward, challenges remain. The ambitious timeline requires seamless coordination between ISRO, private companies, and the military, which could face delays due to technical complexities or funding constraints. The private sector’s relative inexperience in defence-grade satellite manufacturing may also pose risks to quality and reliability.

Moreover, the global space environment is increasingly contested, with space debris and ASAT threats complicating satellite operations. India must invest in space situational awareness (SSA) capabilities to monitor and mitigate these risks. International norms on space militarisation, which are still in their infancy, could also impact India’s plans, necessitating diplomatic efforts to safeguard its interests.

On the opportunity front, the programme positions India as a significant space power, fostering technological innovation and economic growth through the private space sector. The public-private partnership model could serve as a blueprint for future defence projects, reducing costs and enhancing efficiency. Additionally, the doctrine’s focus on international cooperation opens avenues for technology transfers and strategic alliances, strengthening India’s geopolitical standing.

 

Conclusion

Operation Sindoor served as a wake-up call for India, highlighting the indispensable role of space-based surveillance in modern warfare. The SBS Phase-3 programme, with its 52 dedicated defence satellites, and the forthcoming military space doctrine mark a transformative step toward self-reliance and strategic dominance in the space domain. By addressing regional threats, leveraging public-private partnerships, and integrating advanced technologies like HAPS and AI, India is poised to secure its borders, maritime interests, and national security.

 

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References and credits

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Disclaimer:

Information and data included in the blog are for educational & non-commercial purposes only and have been carefully adapted, excerpted, or edited from reliable and accurate sources. All copyrighted material belongs to respective owners and is provided only for wider dissemination.

 

 

References:-

 

  1. Times of India (ToI). (2025). “India to Fast-Track 52 Defence Satellites After Operation Sindoor.”
  2. Indian Space Research Organisation (ISRO). (2024). “Space-Based Surveillance Phase-3 Programme Overview
  3. Ministry of Defence, Government of India. (2024). “Approval of Rs 26,968 Crore for Defence Satellite Programme.” Press Release, October 2024.
  4. Defence Space Agency (DSA). (2019). “Mission Shakti and India’s Anti-Satellite Capabilities.” Government of India.
  5. Jane’s Defence Weekly. (2025). “India’s High-Altitude Platform System (HAPS) Acquisition for ISR Missions.”
  6. Stockholm International Peace Research Institute (SIPRI). (2024). “China’s Space Programme and Anti-Satellite Capabilities.” SIPRI Yearbook 2024.
  7. Observer Research Foundation (ORF). (2025). “India’s Military Space Doctrine: A Strategic Roadmap.”
  8. The Hindu. (2025). “Operation Sindoor: India’s Response to Pahalgam Attack.” May 12, 2025.
  9. SpaceNews. (2024). “India’s Private Space Sector: Emerging Players in Defence Satellite Manufacturing.”
  10. Center for Strategic and International Studies (CSIS). (2024). “Space Situational Awareness and the Contested Space Environment.”
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705: CHINA STRENGTHENS SPACE STATION OPERATIONS WITH TIANZHOU-9 RESUPPLY MISSION

 

My article was published on “The EurasianTimes” website

on 16 Jul 25.

 

On July 15, 2025, at 5:34 a.m. Beijing Time, China commemorated another milestone in its ambitious space program with the successful launch of the Tianzhou-9 cargo spacecraft from the Wenchang Spacecraft Launch Site in Hainan Province. Tianzhou-9 ascended into the predawn sky to deliver essential cargo supplies to the Tiangong space station, China’s orbiting outpost in low Earth orbit.

Launched aboard a Long March-7 Y10 rocket from the Wenchang Space Launch Site in Hainan Province, Tianzhou-9 reached orbit approximately 10 minutes after lift-off. Just over three hours later, it autonomously docked with the Tiangong station’s Tianhe core module, completing a rapid and exact rendezvous manoeuvre. This fast and precise docking underscores the maturity of China’s automated rendezvous and docking technology, a crucial capability for sustaining long-term space missions.

This mission represents the fourth cargo resupply flight since Tiangong entered its application and development phase. The mission highlights China’s increasing confidence in orbital logistics and its capacity to sustain an independent, fully operational space station.

 

Tianzhou-9’s Cargo

Tianzhou-9 reportedly carried between 6.5 and 7.2 tonnes of cargo, comprising essential living supplies, advanced hardware, and a wide array of scientific instruments. Among the mission’s most notable payloads were two upgraded extravehicular activity (EVA) spacesuits. These new-generation suits boast improved durability, with a lifespan of four years and the capacity to support up to 20 spacewalks. These enhancements will enable taikonauts aboard Tiangong to carry out longer, more frequent, and safer operations outside the station.

In addition to the EVA suits, Tianzhou-9 brought a new core-muscle training device designed to help astronauts maintain muscle strength and mitigate the effects of extended weightlessness. Physical health in microgravity is a key concern for long-duration missions, and this device will contribute to China’s research into space physiology and crew health maintenance.

One of the most innovative scientific payloads onboard was a brain organoid-on-a-chip experiment. This sophisticated biological test aims to replicate human brain cells under microgravity conditions, examining the functionality of the blood–brain barrier in space. The research has the potential to provide valuable insights into the cognitive and neurological risks encountered by astronauts during extended space missions. It could contribute to the development of future countermeasures.

Also included in the cargo were nanocarrier-based drug delivery systems, materials science experiments, and tools for aerospace medicine studies. The spacecraft also carried consumables such as food, water, and oxygen for the crew of Shenzhou-20 currently residing on the space station, as well as propellant to help Tiangong maintain its orbit and perform attitude adjustments. These supplies are essential for maintaining the habitability of Tiangong, which has been operational since its core module was launched in April 2021.

 

A Critical Link in the Tiangong Ecosystem

The Tiangong space station, currently in its application and development stage, marks a major advancement in China’s space ambitions. Unlike earlier testbed stations, Tiangong is a modular, permanent platform designed to compete with the International Space Station (ISS). It consists of the Tianhe core module and the Wentian and Mengtian experimental modules, enabling a broad spectrum of scientific research, technological tests, and crew activities.

As Tiangong matures into a fully operational orbital laboratory, the Tianzhou series of cargo spacecraft provides the logistical backbone to maintain its operation smoothly. With a payload capacity exceeding 6.5 tonnes and autonomous docking capabilities, Tianzhou spacecraft are comparable to other international resupply systems, such as SpaceX’s Dragon, Russia’s Progress, and Northrop Grumman’s Cygnus vehicles.

Each Tianzhou launch not only replenishes life-support essentials but also delivers a suite of scientific instruments to support China’s growing space research program. By regularly rotating crews and resupplying the station, CMSA ensures that Tiangong remains a vibrant hub for microgravity research, life sciences, materials development, and advanced technologies.

 

China’s Broader Space Strategy and Global Ambitions

China’s space program operates independently of other leading spacefaring nations, primarily due to geopolitical constraints, including U.S. legislation that restricts NASA’s collaboration with China. Consequently, Tiangong exemplifies China’s independence in space technology. From launch vehicles to spacecraft and ground infrastructure, all elements of the Tiangong program are developed domestically, demonstrating China’s engineering prowess.

China’s consistent success in human spaceflight and station operations reflects its long-term ambitions to become a dominant spacefaring nation. The Tianzhou-9 mission represents merely the latest in a series of accomplishments that include landing rovers on the Moon and Mars, launching the world’s largest radio telescope, and sending up a relay satellite to support future lunar missions.

Furthermore, the operation of China’s space station offers invaluable expertise for subsequent deep-space expeditions. The competencies acquired in spacecraft docking, extended human habitation, robotic management, and onboard medical research constitute essential foundational skills for prospective missions to the Moon or Mars.

 

Global Context

The Tianzhou-9 mission comes at a time when global interest in space exploration is surging. The ISS, a collaborative effort involving the U.S., Russia, Europe, Japan, and Canada, is nearing the end of its operational life, with planned decommissioning in 2030. Tiangong, by contrast, is a relatively new platform, positioning China as a key player in the next era of human spaceflight. While Tiangong is smaller than the ISS, its capabilities are robust, and its scientific output is growing.

China has expressed a willingness to cooperate internationally regarding the Tiangong space station, extending invitations to other nations to conduct experiments aboard the facility. This initiative may facilitate the development of partnerships with countries across Asia, Africa, and other regions, particularly those without established space programs. Such collaborations possess the potential to redefine the geopolitics of outer space, fostering new alliances and avenues for scientific advancement.

 

Future Prospects

In 2025, China is expected to launch Shenzhou-21, which will carry a new crew to the space station. The incoming team will relieve the current taikonauts and proceed with the ongoing scientific research, while also preparing for future enhancements to the station’s infrastructure.

Beyond Tiangong, China is also formulating plans to deploy astronauts on the Moon before 2030. The Tianzhou and Shenzhou missions will function as essential training platforms for life support systems, crew rotations, and logistical supply chains necessary for such sustained undertakings.

 

Conclusion

The launch of Tianzhou-9 symbolises more than merely another cargo delivery; it exemplifies China’s rapidly progressing capabilities in space logistics, engineering expertise, and increasing leadership in orbital sciences. With each successive mission, China advances towards realising its vision of establishing itself as a preeminent entity in human spaceflight and space-based research. As the Tiangong space station develops into an international platform for scientific and technological endeavours, global attention remains focused. Tianzhou-9 has not only provided the necessary hardware and experiments to support this future but has also reaffirmed China’s preparedness to spearhead the forthcoming era of space exploration.

 

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Big Milestone For China’s Space Program! Beijing Masters Logistics For Tiangong’s Cosmic Future With Tianzhou-9 Resupply Mission

 

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References and credits

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Disclaimer:

Information and data included in the blog are for educational & non-commercial purposes only and have been carefully adapted, excerpted, or edited from reliable and accurate sources. All copyrighted material belongs to respective owners and is provided only for wider dissemination.

 

 

References:–

China Manned Space Agency. (2025, July 15). Tianzhou-9 docks with Tiangong space station. Xinhua News.

Howell, E. (2025, July 15). China launches Tianzhou 9 cargo spacecraft to Tiangong space station. Space.com. Retrieved from https://www.space.com

Global Times. (2025, July 15). Tianzhou-9 brings upgraded EVA suits, brain organoid experiments to Tiangong. Retrieved from https://www.globaltimes.cn

Jones, A. (2025, July 16). Tianzhou-9 Bolsters China’s Tiangong Space Station with Critical Supplies and Experiments. The Planetary Society Blog.

People’s Daily. (2025, July 15). China Advances Its Space Program with the Launch of Tianzhou-9 from Wenchang—People’s Daily Online.

CCTV News. (2025, July 15). Tianzhou-9 Successfully Launched, Strengthening Tiangong’s Capabilities. China Central Television.

China National Space Administration (CNSA). (2025). Mission overview: Tianzhou and Tiangong programs. Retrieved from http://www.cnsa.gov.cn

CGTN. (2025, July 15). Tianzhou-9 launch completes rapid autonomous docking with Tiangong. CGTN News.

Xinhua News Agency. (2025, July 15). China Sends Tianzhou-9 Cargo Spacecraft to Supply Tiangong Space Station. Xinhua Net.

SpaceNews. (2025, July 15). China’s Tianzhou-9 Cargo Mission Supports Tiangong with Supplies for Shenzhou-20 and Shenzhou-21 Crews. SpaceNews.

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677: NISAR: MAPPING THE FUTURE AND REVOLUTIONISING CLIMATE AND DISASTER INTELLIGENCE

 

My article was published in the Jun edition of the

News Analytics Journal

 

 

In an era where climate change, natural disasters, and ecological degradation are becoming more pressing global concerns, advanced space-based Earth observation has emerged as a vital tool. The NASA-ISRO Synthetic Aperture Radar (NISAR) mission is a landmark collaboration between the National Aeronautics and Space Administration (NASA) and the Indian Space Research Organisation (ISRO).

NISAR represents the most advanced dual-frequency radar satellite ever developed for civilian use. Once operational, NISAR will monitor Earth’s land and ice surfaces with high precision. It will capture surface movements down to fractions of an inch, aiding in studying tectonic shifts, glacier dynamics, forest health, and infrastructure stability.​ It can transform how we understand and respond to changes on Earth’s surface, ranging from glacial movements to forest biomass, from seismic activity to urban land subsidence.

The latest update on the NASA-ISRO Synthetic Aperture Radar (NISAR) mission indicates that the launch is scheduled for late May to June 2025, a shift from the anticipated March 2025 timeline. This delay, caused by thermal coating issues with the 12-meter radar antenna reflector, was resolved by October 2024. Despite the delay, the mission’s objectives and timeline remain intact. Final integration and testing are underway at ISRO’s facilities in Bengaluru. The satellite is expected to be transported to the Satish Dhawan Space Centre in the coming weeks to prepare for its launch aboard a GSLV Mark II rocket.​

 

NISAR Project: Collaborative Effort

 

Genesis. The NISAR mission concept emerged from NASA’s 2007 Decadal Survey, which called for advanced SAR data to address gaps in Earth science. Formalised in 2014 with a partnership agreement, the project has progressed through rigorous design, testing, and integration phases. NASA’s Jet Propulsion Laboratory (JPL) and ISRO’s Space Applications Centre have worked closely to refine the mission’s science plan and hardware.

Project Details. The NISAR mission is designed to provide unprecedented global radar imagery using L-band and S-band synthetic aperture radars. NASA has provided the L-band radar system, high-rate communication subsystem, GPS receivers, and payload data systems. ISRO is contributing the S-band radar, satellite bus, and launch services via the GSLV Mk II from the Satish Dhawan Space Centre. The satellite will be placed in a sun-synchronous polar orbit at about 747 kilometres and revisit the exact location on Earth every 12 days. The SAR payload will produce radar images with a resolution of 5–10 meters and a swath of 240 kilometres, enabling wide-area monitoring of Earth’s surface with high precision. The unique dual-band system of NISAR allows it to penetrate vegetation, ice, and soil more accurately than single-frequency satellites, making it a game-changer in Earth observation. The L-band is particularly effective for tracking subsurface movement and biomass, while the S-band is more sensitive to finer surface features.

Collaboration. The NISAR partnership exemplifies international cooperation in space exploration. NASA’s investment, estimated at $1.118 billion, covers the L-band radar and critical subsystems, while ISRO’s contribution, approximately ₹788 crore ($92 million), includes the S-band radar, spacecraft bus, and launch services. This division of responsibilities optimises costs and expertise, building on NASA’s legacy of SAR missions (e.g., SEASAT in 1978) and ISRO’s advancements in satellite technology (e.g., the Chandrayaan missions). The collaboration extends beyond hardware. Joint workshops, working groups, and the NISAR Utilisation Programme announced by ISRO in July 2023 engage the global scientific community, fostering data analysis and application development. The mission’s open data policy aligns with the principles of transparency and collaboration, setting a precedent for future NASA-ISRO endeavours, including potential Mars exploration missions.

 

Mission Objectives and Scientific Impact

NISAR’s primary goal is to make global measurements of land surface changes, detecting movements as small as a centimeter. By mapping the globe every 12 days, the satellite will generate spatially and temporally consistent data, offering insights into complex Earth processes. Its objectives span three key domains: deformation, ecosystem structure, and ice dynamics. NISAR will monitor seismic zones, volcanic activity, and landslide-prone areas for deformation, providing early warning signs for natural disasters. In ecosystem studies, it will track forest extent, vegetation biomass, and agricultural patterns, aiding sustainable resource management. NISAR will measure glacier flow rates and ice-sheet stability for ice dynamics, contributing to our understanding of climate change and sea level rise.

All NISAR data will be freely available within one to two days of observation or hours for emergencies like natural disasters. This accessibility and NISAR’s high-resolution imagery (5-10 meters) will empower scientists, policymakers, and disaster response teams worldwide. The data can enhance infrastructure monitoring, improve agricultural management, and inform rapid disaster response, potentially saving lives and property. The open data policy also encourages collaboration and innovation, allowing for the development of new applications and tools to further leverage NISAR’s capabilities.

 

Applications

Natural Disaster Monitoring and Response. NISAR will be critical in mapping the aftermath and precursors of earthquakes, floods, volcanic eruptions, and landslides. The radar’s ability to detect minute ground deformations will help forecast and emergency response, reducing the human and economic cost of such events.

Climate Change Observation. The satellite will track ice sheet movement in Antarctica and Greenland, glacial retreat in the Himalayas, and coastal subsidence, all critical indicators of global climate change. NISAR data will also assist in modelling sea level rise and understanding the behaviour of the permafrost regions, which store vast amounts of greenhouse gases.

Agriculture and Forestry. NISAR’s radar can estimate biomass and crop yield, making it invaluable for food security planning and carbon stock assessment. It will monitor deforestation, forest degradation, and land-use changes, helping countries meet international commitments such as those under the Paris Agreement and REDD+ initiatives.

Urban Infrastructure Monitoring. Urban planners and disaster mitigation agencies can use NISAR to monitor growing cities’ subsidence, groundwater depletion, and infrastructure stress. Its precise deformation measurements can help predict building collapses, dam failures, and roadbed weaknesses.

Scientific and Tectonic Research. Scientists will use NISAR to understand better plate tectonics, fault line dynamics, and volcano formation. The L-band radar, in particular, is ideal for detecting ground movements as small as a few millimetres, critical for early warnings in earthquake-prone regions.

Strategic Significance

The NISAR mission is a scientific milestone and a strategic symbol of the growing India-US partnership in space technology. It reflects significant technological trust and collaborative capacity-building, especially as China expands its space and Earth observation programs.

For India, the mission provides access to advanced radar imaging technology, enhances its global space diplomacy profile, and contributes to developing disaster management and environmental monitoring capacity. For the U.S., NISAR extends Earth observation to low-latitude and tropical regions, which are difficult to monitor from NASA’s polar-focused satellites.

 

Conclusion

NISAR stands at the intersection of science, diplomacy, and strategic policy. As the world’s most advanced Earth-observing radar satellite, it will provide a detailed, dynamic picture of the planet’s changing surface. Whether helping farmers optimise irrigation, supporting relief efforts after natural disasters, or aiding climate scientists in tracking global warming, NISAR will become an indispensable part of humanity’s Earth-monitoring infrastructure.

By combining ISRO’s cost-effective engineering and operational expertise with NASA’s deep technological experience, NISAR heralds a new era in Earth observation and exemplifies the international collaboration required to tackle global challenges.

 

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Disclaimer:

Information and data included in the blog are for educational & non-commercial purposes only and have been carefully adapted, excerpted, or edited from reliable and accurate sources. All copyrighted material belongs to respective owners and is provided only for wider dissemination.

 

 

References: –

  1. Indian Space Research Organisation. (2024). NASA-ISRO SAR (NISAR) Mission Overview. Retrieved from https://www.isro.gov.in
  1. NASA Earth Science Division. (2023). NISAR Mission Overview. https://nisar.jpl.nasa.gov
  1. NASA Jet Propulsion Laboratory. (2024). NISAR: NASA-ISRO Synthetic Aperture Radar. https://nisar.jpl.nasa.gov
  1. ESA Earth Observation Portal. (2023). Synthetic Aperture Radar Applications in Climate and Disaster Monitoring.
  1. United Nations Office for Disaster Risk Reduction (UNDRR). (2023). Role of Earth Observation in Risk Reduction.
  1. Sharma, A. & Kumar, R. (2022). “India-US Space Cooperation: Strategic Implications.” ORF Occasional Paper, Observer Research Foundation.
  1. Ray, P. (2023). “Climate Resilience through Satellite Monitoring in South Asia.” Nature Climate Policy, 15(3), 410-417.
  1. Rosen, P. A. (2021). The NASA-ISRO Synthetic Aperture Radar (NISAR) Mission – Technologies and Techniques for Earth Science. NASA Technical Reports Server. https://ntrs.nasa.gov
  1. Ramachandran, R. (2024). “Thermal coating issue fixed on NASA-ISRO NISAR mission.” The Hindu Science & Tech. https://www.thehindu.com
  1. Nayak, A., & Kumar, P. (2023). “SAR Technology for Earth Observation: Advances with the NISAR Mission.” Current Science, 125(9), 1463–1471.
  1. Prasad, S., & Mehta, K. (2022). “Earth Observation and Indian Disaster Management.” Journal of Geospatial Technologies, 14(2), 91–104.
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