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678: PROJECT KUSHA: INDIA’S INDIGENOUS SKY SHIELD

 

My Article published on “The EurasianTimes” website on 10 Jun 25.

 

 

On June 8, 2025, the Defence Research and Development Organisation (DRDO) chief announced that Project Kusha is equivalent to Russia’s S-500 and surpasses the S-400 in capabilities. This positions it as a “game-changer” for India’s air defence. It is designed to counter stealth jets, drones, aircraft, and Mach 7 anti-ship ballistic missiles with an 80–90% interception success rate.

Project Kusha is an ambitious Indigenous long-range air defence system being developed by the DRDO. It is also known as the Extended Range Air Defence System (ERADS) or Precision-Guided Long-Range Surface-to-Air Missile (PGLRSAM). Project Kusha bridges the gap between the 80 km MR-SAM and 400 km S-400, integrating with systems like Akash and Barak-8.

It is a critical part of India’s self-reliance initiative, “Atmanirbhar Bharat”.  The home-grown solution aims to safeguard India’s airspace from aerial threats by strengthening defences against regional threats, particularly from Pakistan and China. The project has gained attention after the May 2025 India-Pakistan conflict, where air defence systems proved vital against drones and missiles, underscoring the need for indigenous capabilities like Kusha. With a projected deployment timeline of 2028–2029, this system is poised to enhance the operational readiness of the Indian Air Force (IAF) and Indian Navy.

 

System Specifications

Interceptor Missiles. Project Kusha’s core strength lies in its three-tiered interceptor missile system, designed to neutralise various aerial threats at varying ranges. The M1 Interceptor (150 km) missile would target threats like fighter jets, drones, and cruise missiles at shorter ranges. Its compact 250 mm diameter kill vehicle, equipped with a dual-pulse solid rocket motor and thrust vector control, ensures high manoeuvrability and precision, making it ideal for tactical engagements. The M2 Interceptor (250 km) missile with an extended range can engage advanced targets, including airborne early warning and control systems (AEW&CS) and anti-ship ballistic missiles (ASBMs). It shares the M1’s 250 mm kill vehicle, optimised for agility and accuracy against mid-range threats. The M3 Interceptor (350–400 km), the longest-range missile in the system, is designed to counter larger aircraft and potentially short- and medium-range ballistic missiles (SRBMs and IRBMs). It may feature a larger 450 mm diameter kill vehicle to achieve its extended range and enhanced lethality.

Capabilities. These interceptors boast an impressive single-shot kill probability of 85%, which rises to 98.5% when two missiles are launched in salvo mode, five seconds apart. The missiles likely employ hit-to-kill (HTK) technology, relying on kinetic energy rather than explosive warheads, similar to advanced systems like the US THAAD or SM-3. Dual-seeker technology, combining radar and infrared guidance, enhances their ability to track and destroy low-radar-signature targets, such as stealth aircraft and cruise missiles.

Advanced Radar Systems. The effectiveness of Project Kusha hinges on its state-of-the-art radar systems, particularly the Long Range Battle Management Radar (LRBMR), an S-band radar with a detection range exceeding 500 km. This radar can scan 500–600 km into enemy territory, providing early warning against stealth aircraft, drones, precision-guided munitions, and ballistic missiles. The system integrates seamlessly with India’s Integrated Air Command and Control System (IACCS), enabling real-time coordination with other air defence systems, including Akash, MRSAM, and the S-400. For naval applications, the Indian Navy is developing a 6×6-meter radar for its Next Generation Destroyer, four times larger than the radar on the Visakhapatnam-class destroyer, to detect sea-skimming missiles and ASBMs with ranges up to 1,000 km.

Multi-Layered Defence Architecture. Project Kusha is designed as a multi-layered air defence system. It provides strategic and tactical cover for critical infrastructure, military bases, and urban centers. The system’s versatility allows it to counter various threats, from low-flying cruise missiles to high-altitude aircraft and limited ballistic missile threats. By integrating with India’s Ballistic Missile Defence (BMD) program, including the AD-1 and AD-2 interceptors, Project Kusha forms a robust shield against both conventional and strategic threats.

Technological Innovations. Project Kusha incorporates cutting-edge technologies to ensure operational superiority:-

    • AI-Enabled Decision Support. The system may leverage artificial intelligence to coordinate intercepts, process real-time data from satellites, radars, AWACS, and UAVs, and optimise target engagement.
    • Dual-Seeker Technology. Combining radar and infrared seekers enhances the system’s ability to track and destroy stealthy or low-observable targets.
    • Compact Design. The M1 and M2 interceptors’ 250 mm diameter kill vehicles are notably smaller than comparable systems like the US SM-2 or SM-6, showcasing DRDO’s innovative approach to missile design.

 

Comparison with Global Systems

 

S-400 Triumf (Russia). The S-400 can engage 36 targets simultaneously at a range of 400 km. Project Kusha aims to match this range with its M3 interceptor and offers better integration with India’s defence architecture, reducing reliance on foreign maintenance and support.

Patriot (USA). While the Patriot is a proven system, Kusha’s lower cost and indigenous design provide a tailored alternative for India’s needs, with potential for greater scalability.

David’s Sling and Iron Dome (Israel). Although similar in some aspects, such as dual-seeker technology, Kusha’s M2 and M3 missiles offer longer ranges and limited BMD capabilities, unlike David’s Sling’s focus on shorter-range threats. The Iron Dome is optimised for short-range rocket interception, while Kusha targets long-range strategic threats, making it more comparable to the S-400 or Patriot.

 

Project Details & Development Journey

Approval and Funding. In May 2022, the Cabinet Committee on Security (CCS) approved the development of Project Kusha. In September 2023, the Ministry of Defence granted the Acceptance of Necessity (AoN) for procuring five IAF squadrons at an estimated cost of ₹21,700 crore (approximately US$2.6 billion). This investment reflects India’s commitment to building a self-reliant defence ecosystem that addresses modern threats.

Key Partners. The DRDO is leading the Project Kusha, with Bharat Electronics Limited (BEL) playing a pivotal role in developing critical subsystems like radars and battle management systems. The Defence Research and Development Laboratory (DRDL) is responsible for designing the interceptor missiles, while the Research Centre Imarat (RCI) focuses on advanced seeker technology. Collaboration with private industry partners is expected to accelerate development and production, aligning with India’s push for public-private partnerships in defence.

Timeline. As of May 2025, the DRDO has reportedly completed the design phase, with development of critical components underway. BEL aims to complete a prototype within 12–18 months (by November 2026–May 2027). The user trials are expected to last 12–36 months, paving the way for operational deployment by 2028–2029.

 

Strategic Significance

Self-Reliance and Cost-Effectiveness. Project Kusha is a cornerstone of India’s Atmanirbhar Bharat initiative, reducing dependence on foreign systems like the S-400, which faced delivery delays due to the Russia-Ukraine conflict. At ₹21,700 crore for five IAF squadrons, it is significantly more cost-effective than the $5.25 billion deal for five S-400 units, offering comparable capabilities tailored to India’s operational needs. This cost advantage enhances India’s ability to scale its air defence infrastructure without straining its defence budget.

Regional Deterrence.  With China and Pakistan modernising their air forces and missile arsenals, Project Kusha strengthens India’s deterrence posture. Its ability to counter stealth aircraft, cruise missiles, and ASBMs addresses emerging threats in the Indo-Pacific, particularly China’s growing naval and missile capabilities. The system’s integration with the IACCS ensures a cohesive defence network, enabling rapid response to multi-domain threats and enhancing India’s strategic autonomy.

Export Potential. Project Kusha’s advanced technology and competitive pricing position India as a potential global air defence market player. Countries seeking alternatives to Western and Russian systems may find Kusha attractive, boosting India’s defence exports and geopolitical influence. Success in this arena could elevate India’s status as a defence technology provider, complementing its exports like the BrahMos missile.

 

Challenges and Considerations

Technical Challenges. Achieving the claimed ranges with compact interceptors, particularly the 150 km M1, has raised scepticism due to its small size compared to US SM-2 or SM-6 systems. Ensuring reliability and accuracy against stealthy and hypersonic threats will require rigorous testing and validation.

Development Timeline. The 2028–2029 deployment target is ambitious, given the complexity of integrating advanced radars, AI systems, and interceptors. Delays in prototype development or user trials could push back operational readiness, as seen in past DRDO projects.

System Integration. Seamless integration with existing systems (Akash, MRSAM, S-400) and future systems (AD-1, AD-2) is essential for a cohesive air defence network. Any interoperability issues could undermine the system’s effectiveness and delay deployment.

International Competition. India will face stiff competition from established players like the US, Russia, and Israel in the global air defence market. Demonstrating technological superiority and reliability will be critical for export success and domestic adoption.

 

Future Phases

Naval Integration. The Indian Navy plans to deploy the M1 and M2 interceptors on next-generation surface combatants, such as destroyers, to counter ASBMs and other maritime threats. The enhanced naval radar system will provide 360-degree coverage, enabling early detection and interception of sea-skimming missiles. This integration underscores Project Kusha’s role in strengthening India’s maritime security, particularly in the Indo-Pacific region, where threats like China’s DF-21D “carrier-killer” missiles pose significant challenges.

Future Enhancement. Project Kusha is the first phase of a multi-phase program. Phase II aims to develop interceptors with ranges exceeding 400 km and anti-hypersonic capabilities, potentially rivalling Russia’s S-500 system. This long-term vision underscores India’s ambition to remain at the forefront of air defence technology, addressing future threats like hypersonic missiles and advanced stealth platforms.

 

Conclusion

Project Kusha represents a monumental leap in India’s quest for self-reliance in defence technology. It promises to deliver a versatile, multi-layered air defence shield capable of countering diverse threats by combining advanced interceptors, long-range radars, and AI-driven systems. A cost-effective price tag and a focus on indigenous innovation strengthen India’s strategic autonomy and position the country as a potential leader in the global defence market. However, overcoming technical challenges and meeting the ambitious 2028–2029 timeline will be critical to realising its full potential. As India advances toward operational deployment, Project Kusha is a testament to its growing technological prowess and commitment to safeguarding its skies.

 

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India’s Own S-500 & THAAD! DRDO Announces Project Kusha Sky Shield Program That Could Revolutionize Indian Defenses

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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. Press Information Bureau (PIB), Government of India, “DRDO Chief Briefs on Indigenous Long-Range Air Defence System ‘Project Kusha’.” PIB Release, June 8, 2025.
  2. Bedi, R. (2023, September 10). India approves indigenous long-range air defence system under Project Kusha—Jane’s Defence Weekly.
  3. Bharat Electronics Limited. (2025, May 15). Annual report 2024–2025: Progress on Project Kusha.
  4. Defence Research and Development Organisation. (2024). DRDO newsletter: Advances in air defence systems.
  5. Gupta, S. (2024, December 12). Project Kusha: India’s answer to the S-400. The Times of India.
  6. Indian Ministry of Defence. (2023, September 15). Acceptance of Necessity (AoN) for Project Kusha. Press Information Bureau.
  7. Sagar, P. (2024, November 20). Project Kusha and India’s multi-layered air defence strategy. The Diplomat.
  8. Singh, R. (2025, March 15). How Project Kusha could transform India’s defence exports. India Today.
  9. The Hindu, “Project Kusha Will Be India’s Answer to S-500, Says DRDO Chief.” The Hindu Defence Correspondent, June 8, 2025.
  10. Hindustan Times, “Explained: What Is Project Kusha and Why It Is a Game-Changer for India’s Air Defence?” Hindustan Times Defence Desk, June 9, 2025.
  11. Economic Times (ET Defence), “DRDO’s Project Kusha: India’s Indigenous Answer to S-400 and THAAD.” ET Defence, May 2025.
  12. Livefist Defence, Shukla, Shiv Aroor. “India’s Kusha Air Defence System: Details, Development and Deployment Plans.” Livefist, June 2025.
  13. Business Standard, “DRDO’s Project Kusha: DRDL, BEL, RCI Key Partners in Long-Range SAM System.” Business Standard Defence, September 2023.
  14. Jane’s Defence Weekly, “India Advances Work on Multi-Layered Air Defence with Project Kusha.” Janes.com, February 2025.
  15. ORF (Observer Research Foundation), Das, Abhijit Iyer-Mitra. “Strategic Implications of India’s Long-Range Air Defence Ambitions.” ORF Occasional Paper, March 2025.
  16. Vayu Aerospace and Defence Review, “Kusha, Akash-NG, and the Future of Indian Air Defence.” Vayu Defence Review, Issue Q2 2025.
  17. South Asia Monitor, “India’s Air Defence Evolution: From Akash to Kusha.” South Asia Monitor, April 2025.

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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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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. 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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676: COUNTER-STEALTH TECHNOLOGIES: EVOLVING DEFENCES AGAINST INVISIBLE THREATS

 

My article was published in the “Life of Soldier” Journal Jun 25 Issue.

 

Stealth technology, a marvel of engineering designed to render aircraft, ships, and other military assets nearly invisible to radar, infrared, and other detection systems, has been a cornerstone of modern warfare since the late 20th century. Stealth platforms have provided significant tactical advantages by reducing radar cross-sections (RCS), absorbing radar waves, and minimising heat signatures. However, as stealth technology has proliferated, so too have counter-stealth technologies aimed at detecting, tracking, and neutralising these elusive targets. The race to detect the undetectable has intensified as stealth platforms proliferate in modern arsenals. Counter-stealth technologies—once niche and experimental—are now at the forefront of 21st-century defence strategy.

Principles of Stealth Technology. To understand counter-stealth technologies, it’s essential to grasp how stealth works. Counter-stealth technologies aim to exploit weaknesses in these principles, leveraging advanced sensors, signal processing, and innovative detection methods to uncover hidden assets. Stealth platforms rely on several key principles:-

    • Radar Cross-Section Reduction. Stealth vehicles are designed with smooth, angular shapes to deflect radar waves from the source, minimising the energy returned to the radar receiver. Materials like radar-absorbent coatings further reduce reflectivity. 
    • Infrared Signature Suppression. Engines and exhaust systems are engineered to minimise heat emissions, making it harder for infrared sensors to detect the platform. 
    • Electronic Emission Control. Stealth systems limit or disguise electromagnetic emissions, such as radio or radar signals, to avoid detection by electronic support measures (ESM).
    • Acoustic and Visual Camouflage. Submarines and some aircraft reduce noise and visual signatures to evade sonar and optical detection.

Evolution of Counter-Stealth Technologies. The quest to counter stealth began shortly after the introduction of stealth aircraft like the F-117 Nighthawk in the 1980s. Early efforts focused on improving existing radar systems and exploring alternative detection methods. For example, during the 1999 Kosovo War, Serbian forces reportedly used outdated but modified low-frequency radars to detect and shoot down an F-117, highlighting vulnerabilities in stealth designs optimised against high-frequency X-band radars used in most modern systems. Low-frequency radars became an early counter-stealth tool operating in the VHF and UHF bands. Though less precise, these radars can detect stealth aircraft because their longer wavelengths are less affected by radar-absorbent materials and angular designs. However, their large size and limited resolution initially restricted their battlefield utility.

 

Modern Counter-Stealth Advancements.

Counter-stealth technologies have become more sophisticated in the 21st century, driven by advancements in computing, sensor fusion, and materials science.

Advanced Radar Systems.

    • Low-Frequency and Bistatic Radars. Modern low-frequency radars, such as Russia’s Nebo-M and China’s JY-26, combine improved signal processing with mobility, overcoming earlier limitations. Bistatic and multistatic radar systems, which separate the transmitter and receiver, further complicate stealth designs by detecting scattered radar waves that stealth platforms cannot entirely suppress.
    • Over-the-Horizon (OTH) Radars. OTH radars bounce signals off the ionosphere to detect targets thousands of kilometers away. Systems like Australia’s Jindalee Operational Radar Network can track stealth aircraft over vast distances, though their resolution remains coarse.
    • Passive Radar Systems. These systems detect stealth platforms by analysing ambient electromagnetic signals from FM radio, TV broadcasts, or cellular networks. Because stealth platforms cannot eliminate all reflections, passive radars can exploit these signals to identify anomalies. The Czech Republic’s Vera-NG is a notable example.

Infrared and Electro-Optical Systems. Infrared search and track (IRST) systems have become a powerful counter-stealth tool. By detecting heat signatures from engines, exhausts, or even aerodynamic friction, IRST systems bypass radar stealth entirely. Modern IRST systems, like those on the Russian Su-57 or the Eurofighter Typhoon, use advanced focal plane arrays and image processing to distinguish stealth platforms from background noise. Electro-optical systems, combining high-resolution cameras with machine learning, can also identify visual anomalies, such as aircraft silhouettes against the sky.

 

Acoustic and Seismic Detection. Acoustic and seismic sensors offer detection capabilities for ground-based or naval stealth assets. Despite their stealth, submarines produce low-frequency noise that hydrophones and sonar arrays can detect. Similarly, seismic sensors can detect vibrations from stealth vehicles or aircraft, particularly during takeoff or landing. Signal processing advances have improved these systems’ sensitivity, enabling detection over greater distances.

Quantum and Photonic Technologies. Emerging quantum radar systems promise to revolutionise counter-stealth detection. Using entangled photons, quantum radars can detect objects with unprecedented sensitivity, even through radar-absorbent materials. China has claimed progress in this area, though practical deployment remains years away. Photonic radars, which use laser-based systems, also show potential for high-resolution detection of stealth platforms.

Sensor Fusion and Artificial Intelligence. Perhaps the most significant advancement in counter-stealth technology is integrating multiple sensor types through sensor fusion. By combining radar, IRST, acoustic, and passive systems data, militaries can create a comprehensive picture of the battlefield. The role of AI in counter-stealth technologies is crucial, as it enhances the detection process and aids in developing more sophisticated and adaptive stealth designs. Artificial intelligence (AI) enhances this process by analysing vast datasets in real time, identifying patterns, and filtering out noise. For example, AI can distinguish a stealth aircraft’s faint radar return from environmental clutter, improving detection accuracy.

 

Challenges in Counter-Stealth Development

Despite these advancements, counter-stealth technologies face significant challenges:-

 

    • Signal-to-Noise Ratio. Stealth platforms are designed to produce minimal detectable signatures, making it difficult for sensors to distinguish them from background noise. 
    • Cost and Complexity. Advanced counter-stealth systems, such as quantum radars or multistatic arrays, are expensive and require significant infrastructure. Deploying and maintaining these systems can strain defence budgets. 
    • Adaptability of Stealth. As counter-stealth technologies evolve, so do stealth designs. Newer platforms, like the B-21 Raider, incorporate lessons from past vulnerabilities, making them harder to detect. 
    • Electronic Warfare. Stealth platforms often employ electronic countermeasures, such as jamming or decoys, to confuse or overwhelm counter-stealth systems.

 

Case Studies

Russia’s S-400 and S-500 Systems. Russia’s S-400 and S-500 air defence systems exemplify modern counter-stealth capabilities. These systems integrate low-frequency radars, IRST, and advanced signal processing to detect and track stealth aircraft. For instance, the S-400’s 91N6E radar operates across multiple frequency bands, making it effective against low-RCS targets. The S-500, with its reported ability to engage hypersonic and stealth targets, underscores Russia’s investment in counter-stealth technology.

China’s Anti-Stealth Efforts. China has prioritised counter-stealth development, deploying systems like the Type 055 destroyer’s integrated sensor suite and the Divine Eagle UAV, which uses low-frequency radar for long-range detection. China’s quantum radar and AI-driven sensor fusion advancements further position it as a leader in this field.

NATO’s Integrated Air Defence. NATO countries have focused on networked counter-stealth solutions. For example, the U.S.’s Aegis Combat System integrates radar, IRST, and passive sensors across ships and aircraft, creating a layered defence against stealth threats. Through projects like the Future Combat Air System (FCAS), European nations are developing AI-enhanced counter-stealth capabilities for next-generation warfare.

 

Future of Counter-Stealth Technologies

Looking ahead, counter-stealth technologies will likely focus on three key areas:-

Hyperspectral and Multispectral Sensing. Hyperspectral sensors can detect subtle signatures that stealth platforms cannot entirely suppress by analysing targets across a broader range of wavelengths. These systems, already used for satellite reconnaissance, could be adapted for real-time battlefield detection.

Distributed Sensor Networks. Future counter-stealth systems will rely on vast networks of small, low-cost sensors deployed across air, sea, and land. These networks, linked by AI, will create a resilient detection grid that stealth platforms find difficult to evade.

Directed Energy and Electronic Warfare. Counter-stealth technologies may integrate directed energy weapons, such as lasers or microwaves, to neutralise stealth platforms as detection improves. Advanced electronic warfare systems could also disrupt stealth platforms’ onboard systems, rendering them vulnerable.

 

Strategic Implications

The development of counter-stealth technologies raises profound questions about the future of warfare. On one hand, these technologies enhance defensive capabilities, potentially deterring aggression by neutralising the advantages of stealth. On the other hand, they risk escalating arms races, as nations invest in ever-more advanced stealth and counter-stealth systems.

 

Conclusion

Counter-stealth technologies represent a dynamic and rapidly evolving field, driven by the need to counter one of the most transformative innovations in modern warfare. From low-frequency radars to quantum sensors, these technologies leverage cutting-edge science to pierce the veil of invisibility. However, as the technological race between stealth and counter-stealth intensifies, militaries must balance innovation with strategic stability. The future of warfare will likely be defined not by the dominance of one technology but by the interplay of offence and defence in an increasingly complex battlespace.

 

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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. Sweetman, B. (2013). The Stealth Fighter: How the F-117 Changed Warfare. Zenith Press.

 

  1. Roblin, S. (2019). “How Russia’s S-400 and S-500 Missile Systems Plan to Take on Stealth Aircraft.” The National Interest.

 

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  1. Gilli, A., & Gilli, M. (2019). “The Diffusion of Stealth Technology and the Challenges for Air Defence.” Journal of Strategic Studies, 42(3-4), 451-479.

 

  1. Hammes, T. X. (2020). Technological Change and the Future of Warfare. Brookings Institution Press.

 

  1. Rogoway, T. (2021). “Passive Radar Systems Are Becoming a Bigger Threat to Stealth Aircraft.” The Drive.

 

 

  1. Kopp, C. (2010). “Counter-Stealth Radar Technologies: An Analysis of Low Frequency and Bistatic Systems.” Air Power Australia.

 

  1. Perrett, B. (2018). “Australia’s Jindalee Over-the-Horizon Radar: A Strategic Asset for Stealth Detection.” Aviation Week & Space Technology.

 

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  1. Singer, P. W., & Cole, A. (2022). Ghost Fleet: A Novel of the Next World War. Houghton Mifflin Harcourt.

 

  1. Zikidis, K. C., Skondras, A., & Tokas, C. (2014). “Low Observable Principles, Stealth Aircraft and Anti-Stealth Technologies.” Journal of Computations & Modelling, 4(1), 129-165.

 

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  1. NATO Science and Technology Organisation. (2021). Future Air and Space Capabilities: Countering Low Observable Technologies.
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