For most of the 20th Century, military advantage was purchased with money that only states could spend. Stealth coatings, satellite constellations, cryptographic systems, and precision-guided munitions were the products of defence budgets, classified laboratories, and export-controlled supply chains. That world is receding. A growing share of the technology that now decides battlefield outcomes—commercial drones, small satellites, foundation models, quantum computing, and advanced semiconductors—is developed first for civilian markets and only later adapted for war. The direction of technology transfer has quietly reversed, and with it, the advantage once enjoyed by states that could out-invest their rivals in military-specific research is eroding in ways that are difficult to see and harder to reverse.

This erosion is not dramatic. It does not resemble the loss of a battle or the collapse of a treaty. It shows up instead as a widening gap between what a nation’s defence establishment assumes it can do and what a determined adversary, or even a non-state actor with a credit card, can now do as well. Understanding which technologies are driving this shift, how the erosion actually happens, why it has accelerated now, and what a state such as India can do about it is the purpose of this paper.

The Technologies to Watch

Seven categories of dual-use technology deserve close and continuing attention:

• Drones and small unmanned systems. The same motors, cameras, radios, batteries, and flight electronics that power hobbyist drones now underpin tactical ISR platforms and loitering munitions. The crossover is strongest at the small end of the market, where mass-produced commercial components give attackers scale and cost advantages that were unimaginable a decade ago.
• Commercial space and satellite communications. Earth-observation constellations built for agriculture and insurance now provide targeting-grade imagery, while broadband constellations built for rural connectivity now carry military command traffic. A synthetic aperture radar satellite produces the same picture whether the customer is a farmer or an intelligence agency.
• Artificial intelligence and foundation models. Computer vision, autonomous navigation, and large language models developed for consumer and enterprise use now underpin drone targeting, signals analysis, and battlefield decision support. Much of this capability is openly published or commercially licensed rather than classified.
• Quantum computing. Still immature as a computing platform, quantum research already threatens the cryptographic backbone of secure military communications. Adversaries can capture encrypted traffic today and decrypt it once a cryptographically relevant quantum computer becomes available—a strategy known as harvest now, decrypt later.
• Advanced semiconductors. The chips that train frontier AI models and the chips that guide precision munitions increasingly come from the same fabrication lines, making export control an exercise in chasing a single, fungible commodity across a globalised supply chain.
• Cyber and offensive intrusion tools. Commercially sold spyware and intrusion frameworks, built and marketed as lawful-intercept or security-testing products, have repeatedly ended up enabling state-level surveillance and sabotage operations well outside their advertised use case.
• Additive manufacturing and precision electronics. Desktop and industrial 3D printers, combined with widely available design files, allow small workshops to produce drone airframes, munition components, and jigs that once required a dedicated defence-industrial supply chain.

How the Erosion Is Actually Happening

The mechanisms are quieter than they sound:

1. Cost democratisation. Platforms that once cost a state tens of millions of dollars to field now have functional civilian equivalents costing a few hundred or a few thousand. Ukraine alone is estimated to have produced close to two million first-person-view drones in 2024—a scale of precision-strike capability that would have been unthinkable for a state defence budget a generation ago, let alone for the non-state and irregular groups now copying the model.
2. Dependency substitution. Militaries increasingly rely on commercial infrastructure they do not own and cannot fully control. When Ukraine’s access to Starlink connectivity and Maxar’s commercial satellite imagery briefly became a point of political leverage in a negotiation over a critical-minerals deal in February 2025, it exposed how thoroughly modern militaries had come to depend on privately owned, foreign-controlled systems for functions once considered sovereign—communications and intelligence.
3. Silent obsolescence of cryptographic advantage. Encrypted government and military communications are already being harvested and stockpiled by adversaries who cannot yet read them but expect to within the next decade. Recent research has cut the estimated quantum resources needed to break RSA-2048 encryption from twenty million qubits to under one million, with credible estimates of a cryptographically relevant quantum computer arriving as early as 2029.
4. Diversion through globalised supply chains. Even where export controls exist on paper, enforcement struggles to keep pace with dual-use goods routed through intermediaries. In December 2025, the United States disrupted a network responsible for diverting more than 160 million dollars’ worth of advanced AI chips to restricted destinations—a single case among a steady stream of similar actions.

Why the Erosion Is Happening

The underlying causes are structural rather than accidental, and they will not resolve themselves:

• The centre of gravity for frontier innovation has moved from defence laboratories to commercial markets. Venture capital and consumer demand now fund research at a scale and speed that defence procurement cycles cannot match. A smartphone camera sensor, a drone flight controller, or a large language model reaches maturity in commercial markets years before an equivalent military-specific programme would clear its requirements process.
• The very nature of dual-use technology resists the tools states have traditionally used to control it. A rocket that launches a weather satellite can launch a reconnaissance satellite; a communications network built for rural broadband can carry military traffic; a robotic arm designed to service a satellite can just as easily interfere with one. Export control regimes built around discrete, identifiable military hardware struggle against technology whose military application is a matter of software configuration rather than physical design.
• Globalisation has distributed manufacturing and expertise across many jurisdictions with uneven enforcement capacity. Well-designed controls in one country can be routed around through a third-country intermediary, a shell subsidiary, or a permissive jurisdiction, as the steady cadence of diversion prosecutions illustrates.
• The states that own the largest share of dual-use infrastructure—commercial satellite operators, cloud providers, and chip manufacturers—are concentrated in a small number of countries. This means access to militarily relevant civilian technology is increasingly conditioned on the political relationship with the country hosting the provider, not merely on the buyer’s ability to pay.

What Can Be Done

None of this argues for retreating from commercial technology, which is neither possible nor desirable. It argues for a deliberate strategy that treats dual-use dependence as a risk to be actively managed rather than a convenience to be passively accepted:

• Build sovereign backup capacity. For functions where foreign commercial dependence has already proven coercible—satellite communications and imagery chief among them—states need at least a minimum viable indigenous or allied alternative that can be activated if commercial access is withdrawn or degraded.
• Accelerate the migration to post-quantum cryptography. Because harvest-now, decrypt-later attacks are already under way, waiting for a cryptographically relevant quantum computer to appear before upgrading encryption guarantees that today’s most sensitive traffic will eventually be exposed. Migration needs to begin now, prioritised by how long the underlying data must stay secret.
• Mandate secure-by-design standards for dual-use platforms. Requiring cybersecurity and anti-spoofing protections to be embedded at the design stage, rather than added afterward, for satellites, drones, and networked sensors closes a class of vulnerability that has already produced a documented rise in signal-spoofing incidents against space assets.
• Coordinate export controls with trusted partners rather than pursuing them unilaterally. Since dual-use goods move through globalised supply chains, controls that are not harmonised across allied jurisdictions simply redirect trade through the weakest link. Recent friction over unpredictable licensing has already strained cooperation between India and the United States on exactly this point.
• Invest in indigenous capacity in the technologies that matter most. Rather than attempting to control or replicate every dual-use technology, states should concentrate scarce capital and talent on sovereign capability in the handful of domains—secure communications, critical sensors, autonomous systems software—where dependence carries the highest strategic cost.
• Treat commercial-sector monitoring as a standing intelligence function. Because the technologies eroding military advantage are being developed in civilian laboratories and start-ups rather than defence establishments, tracking their maturation requires the same systematic attention traditionally reserved for tracking an adversary’s weapons programmes.

Conclusion The erosion of military advantage through dual-use technology is silent precisely because nothing about it looks like a threat when it happens. A start-up ships a better drone camera. A cloud provider trains a more capable model. A satellite operator signs a new broadband customer. Each transaction is commercially unremarkable. Only in aggregate, and usually only in hindsight, does the pattern become visible: capabilities once confined to defence budgets are now available to anyone with market access, and control over the underlying infrastructure has migrated from ministries of defence to corporate boardrooms in a handful of countries. For India, as for every state seeking to preserve a credible military edge, the task ahead is not to resist this shift—which is neither possible nor sensible—but to build the sovereign redundancy, cryptographic resilience, and coordinated export discipline that allow it to draw on the same civilian innovation without becoming hostage to it.

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Multi-Domain Operations (MDO) is an emerging concept that most modern militaries worldwide are working to integrate into their warfighting doctrines. The key domains encompassed in the concept include the physical domains—land, maritime, air, and space—the electromagnetic spectrum (EMS), which includes cyberspace, and the cognitive/human domain. Unlike the integration and coordination achieved by joint forces in the existing system, MDO aims to deter and defeat adversaries in operations below armed conflict, during armed conflict, and in the post-conflict phase of returning to competition.

At a time when the United States and China are experimenting with various facets of the concept, either overtly or through proxies by providing them technologies, India found an opportunity through Operation Sindoor to test and validate its warfighting concepts and technologies. It was the first instance of non-contact kinetic warfare in which the Indian military achieved the desired political aim without mobilising its formations or physically crossing borders—neither by troops nor by aircraft. India showcased its Aatma Nirbharta (self-reliance) in defence technology and demonstrated its prowess in both offensive and defensive capabilities—drone-centric warfare, resilient and responsive air defence, long-range precision weapons, loitering munitions, and electronic warfare. Operation Sindoor has established a new benchmark in India’s fight against terrorism and set a new parameter and “new normal” for future operations.

The book is structured in two parts: Part I – Multi-Domain Operations Concept and Part II – Operation Sindoor: Appraisal. The United States pioneered the development of the Multi-Domain Battle (MDB) concept in 2015–16, which later evolved into the Multi-Domain Operations (MDO) concept by December 2018. Although the MDO concept is yet to mature into a fully functional warfighting doctrine, it now guides the transformation and modernisation of the US Armed Forces and their peers. China is known to be mirroring the same with its own “Chinese characteristics.”

Part I covers the evolution of the concept in the United States and China, defines the concept primarily derived from US philosophy, explores China’s All-Domain Operations concept, examines limitations of the MDO framework, and discusses India’s challenges and options.

In Part II, after explaining the genesis of India’s problem with Pakistan, the author appraises Operation Sindoor against the backdrop of the MDO concept. Although multiple domains were addressed during Operation Sindoor through coordination and integration among the armed forces and various government departments and agencies, the MDO framework as a concept remains a distant goal. Regarding Pakistan, much of its response was propaganda through influence operations. The author effectively debunks Pakistan’s claim of downing five to six Indian fighter jets on Day One of Operation Sindoor by exposing glaring errors in the technological hypothesis developed by Mr. Michael Dahm, which was widely cited by magazines and newspapers supporting Pakistan’s false narrative.

Drone-centric warfare, multi-layered and integrated air defence, and target-centric warfare employing precision weapons—visible aspects of Operation Sindoor—are covered in comprehensive detail for both India and Pakistan. The dominant role played by Aatma Nirbharta (self-reliance) in defence and the success achieved by indigenous weapons strengthened the government’s resolve to promote it further, a theme well-articulated in the book. The space, EMS, and human domains have also been given due significance.

The hallmark of the book lies in the author’s lucid exposition of Bharat’s strategic culture, which inspires its military ethos. He emphasises that India’s values are indigenous and not borrowed from any other country.

This book, the result of extensive and detailed research by Brigadier (Dr.) Rajeev Bhutani, could not have come at a more opportune time—when nations are actively developing and transforming their forces around the MDO concept. It will be of immense value to military professionals, researchers, scientists and engineers developing defence systems in government, public, and private enterprises, as well as policymakers.

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Autonomy as the Next Evolution of Air Power

Air power has always evolved alongside the dominant technologies of its era.
The early twentieth century belonged to mechanics: the mastery of engines, wings, and altitude. The Cold War was defined by electronics: radar, stealth, and precision-guided munitions. The twenty-first century belongs to autonomy: perception, reasoning, and coordinated action.

Our (India’s) strategic environment is shifting under the combined pressures of regional tension, rapid technological diffusion, and the imperative of sovereignty in critical capabilities. Flanked by nuclear‑armed neighbours and operating across contested air and maritime domains, we must present credible deterrence while preserving freedom of action on multiple fronts. Reliance on imported technologies and legacy platforms is ceding to a new requirement: build indigenous, intelligent, and resilient systems that adapt faster than the threats they face. Against this backdrop, autonomy is not a luxury; it is a strategic necessity that will shape our ability to defend our skies, protect our seas, and project power across the Indo‑Pacific.

Understanding Autonomy

At its core, autonomy is the ability of a system to perceive its environment, interpret complex data, decide on a course of action, and execute. Differentiating automation from mission autonomy – whereas automation follows rules, mission autonomy understands context and adapts to uncertainties. In military air power, this means aircraft, drones, and sensors that respond dynamically to threats, collaborate fluidly, and adjust missions in real time without step‑by‑step direction. Such systems can replan routes under electronic attack, prioritize sensor feeds, or coordinate surveillance coverage across regions. Even when GPS and communications are denied, autonomy continues its mission, relying on uploaded data and making informed decisions. Without it, a mission is merely a plan. In contested environments where links break, manual control falters, and operators are overwhelmed, autonomy turns fragility into endurance.

For us in India, autonomy represents both a necessity and an opportunity. The nation’s airspace, stretching from high-altitude Himalayan borders to vast oceanic approaches, demands persistent surveillance, rapid response, and minimal attrition. Distributed intelligence – systems that think and act collaboratively at the edge – offers a path to surveillance without overstretch.

Simultaneously, autonomy eases manpower and logistics constraints. Intelligent mission management reduces cognitive load on pilots, while extending operational reach and endurance. Where pilots are scarce, autonomy can supplement and step in to fly. By integrating onto systems not bound to long runways, autonomy expands basing options and complicates an adversary’s targeting calculus. Most importantly, it restores freedom of action: the ability to adapt faster than potential adversaries in the shifting tempo of modern conflict.

Teaming as Force Multiplication

The potential of autonomy multiplies when thought of not as isolated machines, but as teams – networks of autonomous systems that can learn from, coordinate with, and support one another in complex missions.

Teaming allows multiple autonomous assets, whether airborne, maritime, or ground-based, to distribute tasks dynamically. Each autonomous asset becomes part of an extended neural network: observing, orienting, deciding, and acting in concert with its peers. One sensor platform may detect and classify targets; another may relay data through a resilient mesh network; a third may execute a strike or provide support in the event of interference/jamming. The network continually re-weaves itself; if one node is jammed or destroyed, others reroute around the gap or cover/bridge the gap by reassigning responsibilities among the able team members.

This model transforms air power from platform-centric to ecosystem-centric. Rather than concentrating risk in a few expensive manned aircraft, forces can employ many, relatively inexpensive, intelligent systems working together, offering agility, redundancy, and resilience. This is autonomy not as an isolated function, but as a living, adaptive web. Each operates semi-independently, but all share a common intent shaped by human command.

For India, such teaming has profound implications. Along the northern and north-western borders, autonomous airborne systems could coordinate patrol patterns, identify intrusions, and hand off tracking without saturating command networks. Over the Indian Ocean, autonomous reconnaissance aircraft can team with other maritime surveillance assets and even satellites to create and sustain a continuous intelligence picture or maritime domain awareness, thereby creating an ability to instantly react to suspicious movement or emerging crises.

Team’s adaptive behaviour contributes to its deterrent quality. When one system is lost or degraded, others reassign tasks automatically, preserving mission continuity. This capacity to self-heal under pressure amplifies deterrence through resilience; adversaries cannot easily capitate a force that reorganizes faster than they can target it.

Partnerships for Autonomy Integration and Sovereign Development

Developing and sustaining autonomy at scale demands an industrial and institutional shift. The speed of AI innovation far exceeds the tempo of traditional defence procurement. To remain competitive, India needs ecosystems that combine military discipline with private‑sector agility, academia’s research depth, and a clear pathway from lab to the frontline.

Crucially, to adapt to the autonomy revolution, India does not have to wait for new airframes. Instead, autonomy can be integrated incrementally onto existing platforms, extending their relevance and capability without wholesale replacement. Across the global defence industry, autonomy is already maturing in the field. Private innovators and research institutions have developed and flight-tested adaptable autonomy architectures that can be integrated onto diverse aircraft and mission profiles. Modern mission computers, open avionics standards, and secure datalink architectures allow legacy fighters, transports, and surveillance aircraft to host autonomous functions from adaptive sensor management to semi-autonomous flight operations and cooperative targeting.

By layering autonomy onto proven airframes, air forces can bridge the gap between current capability and future independence, gaining the benefits of intelligent air power while developing the sovereign expertise to field fully autonomous systems in the decade ahead.

For India, this represents a unique opportunity to accelerate modernization without waiting for generational replacement programs. By partnering with experienced autonomy developers, both domestic and international, India can adopt, adapt, and sovereignly certify proven systems as part of its own modernization cycle……leverage what exists now while investing in indigenous development for tomorrow.

Nevertheless, partnership recommended above must be co‑developmental, not solely transactional. Governments, defence organizations, research centres, and private firms must work within shared simulation environments, data ecosystems, and validation frameworks to accelerate progress in developing sovereign autonomy. Integrating proven architectures can help India operationalize autonomy as a near-term force multiplier while building pathways for indigenous evolution. Instead of rigid, multiyear development cycles, autonomy should advance through iterative, test-driven updates that refine performance in real time. Years of development become weeks. Months of development become days. Such collaboration compresses timelines, strengthens accountability, and embeds transparency as a core feature of capability generation, not a bureaucratic afterthought.

The end-goal of these partnerships is sovereign autonomy: the ability to design, test, and certify mission behaviours under a national authority. Sovereign autonomy ensures that governments, not vendors, control the evolution of their own systems. In practical terms, this means separating flight-critical safety software from mission logic so that domestic teams can adapt operational behaviours without compromising safety or revealing proprietary architectures. Partners that enable integration of existing autonomy while also providing a platform for indigenous development set the conditions for enduring success in a fast‑moving defence landscape. It allows us to integrate and develop, test, and deploy intelligent machines faster than ever.

India’s defence modernization programs have begun to reflect this trajectory. Initiatives like iDEX have opened pathways for small and medium enterprises to contribute advanced software, simulation, and sensor solutions.

International partnerships will matter as well. Trusted collaboration on data standards, testing protocols, and secure interfaces can enhance interoperability without surrendering control. The key is open architecture with disciplined governance – a system that allows India to innovate locally while operating globally.

Through the aforementioned partnerships, autonomy becomes not just a capability but an industry – one that strengthens national resilience, creates enduring expertise, and ensures that the authority to adapt and improve remains sovereign.

Deterrence in the Age of Autonomy

Autonomy and teaming are not only operational enablers, but they are also strategic multipliers. They redefine deterrence for an era in which information moves faster than formations and decision speed decides survival.

Where traditional deterrence emphasized visible mass, like fleets, bases, and inventories, modern deterrence emphasizes invisible agility – the capacity to reconfigure faster than an adversary can target, to absorb disruption, and to project power from unexpected directions. Autonomous air power, even more so if it is runway independent, makes this possible. Systems that can operate from dispersed sites, update tactics overnight, and maintain networked awareness across vast distances present an adversary with an unsolvable dilemma: where to strike, and against what? Deterrence arises from uncertainty in the face of a force that learns and adapts in contact.

For us in India, this agility has profound strategic consequences. Autonomous air power allows the nation to extend presence without overstretch, maintain vigilance across multiple fronts and long borders, and recover from attacks more swiftly. When paired with trusted partnerships and sovereign control, it ensures that India can adapt faster than any external actor can constrain it. Moreover, autonomy enhances coalition credibility. When systems are designed with interoperability embedded from the start, our forces can operate seamlessly alongside allies while preserving control of national assets and data. Predictable collaboration reinforces deterrence by signaling both independence and reliability.

The essence of deterrence in the autonomy era lies in its speed, resilience, and trust. Nations that can integrate these elements will command the initiative not by threatening destruction, but by denying instability. Autonomy, intelligently governed, becomes not an escalatory force but a stabilizing one.

The Future Ahead

Autonomy, teaming, and partnership are not separate trends; they are the intertwined pillars of future air power. They shift the balance from hardware to intelligence, from centralization to adaptability, and from ownership to collaboration. India mastering this triad offers operational advantage and simultaneously strategic independence. By integrating mission autonomy into current forces, creating coordinate networks of platforms for missions, and developing sovereign autonomy through public-private partnership, India can shape an air power model rooted in both freedom and responsibility. In the coming decades, the nations that succeed will not be those that build the most machines, but those that build the most coherent systems where humans, algorithms, industries, and allies act in partnership.

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Projected Requirement for Tethered Drones

The Technology Perspective and Capability Roadmap (TPCR) 2025 directly mentions the requirement for 5,000 tethered drones, designed for round-the-clock surveillance in high-altitude operational areas up to 18,000 feet. The Army has clearly articulated operating norms—these drones must work in extreme temperatures ranging from −50°C to +45°C and deliver up to 9 hours of persistent aerial surveillance in tethered mode, vital for both border regions and forward posts.

Tender Requirements

The latest RFI calls for 5,000 tethered drone systems, reflecting immediate operational needs for surveillance, both day and night, with enhanced data relay and communications support.

The tender documents specify the altitude, endurance, payload, data security, and ruggedization criteria. Companies need to demonstrate proven operational deployment in similar environments. Requirements include high wind resistance, encrypted communications, failsafe systems for power and control, and modular payloads for different mission profiles, including EO/IR cameras, radar, and radio relays.

Some of the important specifications are as follows:

• Operating Altitude: Up to 18,000 feet—securing supremacy in the most challenging mountainous regions.
• Environmental Extremity: Functioning from a frigid −50oC to a scorching +45oC.
• Surveillance Endurance: A minimum of 9 hours of continuous flight in tethered mode.

Indian and global OEMs are invited, with an explicit preference for indigenous manufacturing under Make in India and offset clauses for global buys. This large-scale procurement is highly likely to trigger India’s mandatory Defence Offset Policy. Foreign OEMs must reinvest 30% of the contract value back into India via avenues like Joint Ventures (JVs), Transfer of Technology (ToT), or co-manufacturing. The 30% Offset Obligation applies to all ‘Buy (Global)’ capital acquisitions valued at ₹2,000 Crore (approx. $240 mn) or more.

Employment and Operational Use

Tethered drones are to be deployed along the Line of Control (LoC), Line of Actual Control (LAC), and Siachen, giving persistent overwatch in difficult terrain where conventional deployments are challenged.

Used in network-centric operations, tethered drones can function as airborne radio and data relays for forward units.

Some advanced deployments include jammers and electronic warfare payloads to disrupt hostile drones or signal.

Contemporary Success Stories in Conflict Zones

Ukraine: Tethered drones have been instrumental in trench warfare, offering persistent reconnaissance and communications relays for forces under constant threat, with minimal risk of power/battery shortages or loss due to electronic warfare.

Israel: Used extensively for border surveillance, anti-infiltration, and integrating with automated searchlights and long-range sensors.

Indian Deployments: The Army is already fielding limited numbers in sensitive zones, reporting enhanced situational awareness, reduced intrusions, and successful coordination in joint operations.

Leading Indian Manufacturers in Tethered Drones

BEL. Bharat Electronics Limited has launched multiple tethered UAV models tailored for defence surveillance and communications in harsh conditions. The BEL’s tethered UAV system is a hexacopter designed for high-endurance surveillance and monitoring, It is capable of rising to 100 meters, providing 6 hours continuous operation per sortie (with a rest cycle for cooling). It offers Electro-optic infrared (EO/IR) sensors for both day and night operations, with surveillance range up to 2 km in daylight, 1 km at night. It can be launched from ground vehicles, ships, or static positions for “virtual mast” surveillance, perimeter monitoring, and border security. It has emergency battery operation in case of power failure and modular payload options.

Dhaksha Unmanned Systems. It provides rugged and modular tethered UAV systems under the DH-Tethered UAV series, supporting both military and police applications. The DH-Tethered UAV is of hexacopter design, operating at heights of 100 meters; 24-hour endurance on continuous power supply, 1.5 kg payload, 20 km/h wind resistance. It has a combined EO and thermal camera, gimbal and video stabilization, day/night persistent tracking. It can be assembled in <10 minutes, and is foldable for compact storage. It has direct linking to command and control systems, indigenous winching enclosure, automatic winching and power management.

NewSpace Research & Technologies. The Nimbus Scope model is their flagship tethered drone, developed for super high-altitude and persistent ISR. Its key features are – Twin aerial vehicles per system, up to 200 feet altitude, at least 6 hours continuous tethered operation, 45 mins untethered. It has advanced EO and IR sensors, modular payloads for surveillance and communication. With portable GCS, robust generator, tether/winch station, backup batteries, it is optimized for high-altitude environments such as the LAC.

AERIAL IQ. The Aviral tethered drone, marketed as India’s leading persistent surveillance platform, has long airborne endurance (reported up to 24 hours by product coverage), is immune to jamming with fiber-optic tether, autonomous flight/landing, remote operation from vehicles/vessels. It has high configurable payload capacity—EO/IR sensors, radios, tactical communications modules. It is designed for rapid fielding, mobile units, and secure data relaying for military, fire, and emergency services.

Foreign Players

The leading foreign companies best known for tethered drones include Elistair (France/USA), Hoverfly Technologies (USA), Drone Aviation (USA), Fotokite (Switzerland), DJI (China), and Novadem (France). For policy reasons, DJI will not be eligible to collaborate.

Elistair (France/USA). Widely regarded as the global leader in tethered drone solutions, offering award-winning products like the Orion 2 for defense, law enforcement, and industrial use.

Hoverfly Technologies (USA). Specializes in advanced tethered drone systems designed for persistent surveillance and security in harsh environments.

Drone Aviation (USA). Known for its tactical tethered drones used by military agencies for persistent observation.

Fotokite (Switzerland). Renowned for actively tethered drones used in public safety, emergency response, and fire departments worldwide.Novadem (France). Provides tethered drone systems for law enforcement and defense customers, especially in Europe.

Globally, Elistair is consistently identified as the market leader for tethered drones, holding a substantial share especially in defense and security applications. Hoverfly Technologies and Fotokite follow as significant players with strong presences in North America and Europe, respectively. DJI possesses a notable share in commercial and inspection sectors but is not dominant in the defense market.

Conclusion This procurement not only sets new standards in drone endurance and sophistication but is also poised to transform India’s defence manufacturing ecosystem, leveraging the defence offset policy to bring in new investments, JV opportunities, and advanced technological capabilities for indigenous industries. The scale and ambition of the Indian Army’s tethered drone programme are set to make it one of the largest deployments globally, placing India at the forefront of persistent surveillance and unmanned defence technology.

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This article explores the indispensable role of independent verification activities specific to the safety-critical aerospace domain, drawing insights from pivotal guidance documents like DO-178C for airborne software and its supporting document DO-248C. By outlining a few effective implementation strategies, this discussion aims to highlight the vital contribution of independent verification in developing safe and dependable technologies in this crucial aerospace domain.

The Necessity of Unbiased Scrutiny

Any deviation from intended functionality can have severe consequences in high-stakes and safety-critical systems like aerospace, underscoring the absolute necessity for unwavering reliability. Independent verification, an objective verification conducted by individuals or specialised verification teams independent from the original development of a software lifecycle artifact, is a vital and indispensable requirement of this highly regulated industry.

This separation is not just sheer procedural compliance but stresses the fundamental principle carefully and consciously designed to eliminate inherent biases that can, often unintentionally, be overlooked during the development process. Independent verification provides a critical assurance of unbiased scrutiny, a crucial check that ensures a far more thorough and dependable evaluation of a given lifecycle artifact. This commitment to independence finally serves to significantly improve the trustworthiness and overall integrity of these safety-critical systems, promoting confidence in their safe, dependable, and predictable operation.

DO-178C: The Gold Standard for Aviation Software

In the world of aviation, where even minor errors can lead to serious consequences, independent verification is not only a good practice but is very much essential. DO-178C, the industry guidance for developing safety-critical software systems, provides guidance on the objectives to be satisfied to meet the intent of independence in verification. Annex-A to 178C specifically calls out these objectives that require independent verification, making it clear that development and verification need to be handled by separate individuals or teams to maintain objectivity.

Further, Section 6.0 of this guidance defines the verification process, stressing the essential role of independence in verification activities to ensure the accuracy and completeness of verification activities. This guidance document offers the foundational principles and provides practical implementation guidance. This enables organisations to incorporate independence within their software development lifecycle right from the planning phase of the project, thus cultivating a culture rooted in safety, objectivity, and rigorous quality assurance.

DO-248C: Illuminating the Path to Independence

DO-248C serves as an indispensable companion to the DO-178C guidance document, providing additional supplementary guidance, clarifications and insights into the software systems development and verification process objectives.

The DO-248C discussion paper #19 (DP #19) provides detailed guidance on the need for independence and practical insights for developing safety-critical software systems in aerospace with the DO-178C and DO-278A guidance documents. This discussion paper (DP #196 ) highlights that the principal practices of independence in verification activities are universally essential in the safety-critical aviation domain.

The technology supplements associated with DO-178C guidance, which facilitates the use of more advanced technologies in software development, such as DO-331 (for model-based development), DO-332 (for object-oriented technology), and DO-333 (for formal methods), provides specific guidance that adds to or modifies the guidance of DO-178C on independence in verification.

Meeting Regulatory Expectations: A Non-Negotiable Requirement

Aerospace regulatory bodies worldwide have set clear expectations on the topic of the independence of the verification process in safety-critical systems.  It is a fundamental and non-negotiable requirement to achieve the regulatory compliance and certification of airborne software systems based on the widely accepted DO-178C guidance document and its associated technology supplements. Failure to demonstrate compliance with this can have a significant impact and delays in certification, project cost, time to market, and potential grounding of aircraft. Hence, meeting these regulatory requirements is critical to aerospace organisations. This further helps the organisations get public trust in the safety and reliability of these critical technologies and systems. 

Navigating the Challenges: Best Practices in Implementation

Implementing independent verification processes in the domain of safety-critical aerospace systems, which requires adherence to DO-178C, presents several critical challenges. Below are some more frequent examples of hurdles faced by the industry, but not an exhaustive list:

Resource Allocation: Hiring and retaining adequately skilled team members who specialise in verification processes poses a significant challenge, especially for smaller project teams.

Budgetary Constraints: Projects are usually run on shoestring budgets, which might lead to staffing issues like employees’ conflicts of interest, which may hamper the true nature of effectiveness and independence in verification processes.

System Complexity: The exponentially increasing complexity of modern avionics systems demands that verification engineers required to have a deep understanding of the complexity of the architectures and interdependencies of the sub-systems. This puts a stress on providing specialised training to the engineers and their continuous professional development which further adds to the cost of talent retention.

Maintaining Objectivity: Maintaining objectivity might be affected by overlooked issues and can influence the verification engineer’s objective judgment, such as employee/human issues, like workload, reporting structures, and other biases. This may necessitate the organisations to look for external vendors to ensure no inherent biases and genuinely ensure impartiality, which could add to costs and other administrative and compliance issues.

These challenges emphasise that it is not just about hiring independent people for verification tasks. It needs good plans, a strong will to be fair, and the right set of tools and methods to deal with the tricky part of independence in the verification of complex aviation systems.

The Power of Qualified Tools

Tools that can automate some of the verification activities outlined in Section-6 of DO-178C can play a key role in eliminating human bias, saving cost, and improving the quality and objectivity of the verification process. At the same time, they can add trustworthiness and reliability to the verification results.

If qualified, such tools, as per the guidance enumerated in DO178C, which calls out DO-330 (Software Tool Qualification Considerations), can be a great value addition to substantiate the validity of independence in the verification process. Such qualified tools, in turn, replace human verification and may eliminate the need for deployment of independent personnel or organisations, leading to substantial cost and time savings to the organisation.

Such qualified tools help significantly improve the thoroughness and coverage of verification activities which are to be based on software requirements (high-level and low-level) as mandated by DO-178C and help in ensuring a more comprehensive end-to-end verification of the given software. Qualified tools can improve the efficiency and repeatability of verification process activities, making them more reliable and consistent.

The use of a qualified tool that can automatically generate adequate documentation to show compliance with relevant verification objectives of the standards further helps enhance confidence and trust in the verification outcomes among all the stakeholders, especially the regulators.

The Tool Challenges

Despite the unparalleled benefits  such qualified tools can bring to organisations, they come with a few challenges that need to be considered right from the planning phase. Some of the key challenges that we can mention here are the initial investment, recurring costs of tool maintenance/updates, and the need for specialised training for the verification personnel.

Multiple tool vendors in the industry, like LDRA, provide specialised and integrated COTS tool suites specifically designed to support independent verification activities mapped to the software development lifecycle activities, distinct in standards like DO-178C.

Such COTS tools with tool qualification support packages add great value to the independent verification teams in an organisation as they provide crucial support all through the development, verification, and maintenance phases of a given project with required documentary evidence to meet the intent of DO-178C objectives on independence.

Conclusion: A Foundation of Trust

In the world of safety-critical systems, where the stakes are really very high, showing compliance with the objectives of independent verification stands as a fundamental requirement on which trust, and reliability are built. Diligent adherence to the established guidance of DO-178C and DO-248C, supported by DO-330, and strategically leveraging the advantage of using qualified tools, organisations can reap the benefits of unbiased and thorough verification activities that are not a mere necessity but are essential to ensure safer software systems.

The necessity for rigorous, independent, and unbiased verification is not limited to aerospace. It is a non-negotiable requirement to establish a robust foundation of trust in technological deployments within various safety-critical areas, which include, but are not limited to, systems in nuclear power plants, mission-critical military systems, autonomous driving systems, and life-sustaining healthcare and diagnostic systems. Robust independent verification is an important requirement to ensure safety and reliability in each domain.

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