India's Defence Sector: The Rise of Atmanirbhar Bharat in Military Technology
How India's self-reliance initiative is transforming the defence manufacturing landscape, reducing imports, and empowering indigenous startups.
Read Article →Bhisma Defence Technology is building next-generation electromagnetic concealment and AI-driven defence systems for the Indian Army — indigenously designed and domestically built.
Bhisma Defence Technology is a deep-tech defence startup based in Chandigarh, building AI-powered hardware systems for India's armed forces. We operate at the intersection of signal intelligence, machine learning, and embedded systems.
Our work targets domestic procurement, Atmanirbhar Bharat, and a sovereign defence technology ecosystem — built entirely in India.
Our flagship product — the Energy Signature Masking Device (ESMD) — addresses a critical operational gap: the electromagnetic detectability of forward military bases.
Forward military bases emit electromagnetic signatures through radio communications, radar emissions, and electronic equipment. These signatures are detectable by adversarial SIGINT systems, exposing base locations, operational patterns, and troop movements — a critical vulnerability in active conflict zones.
ESMD is an AI-powered electromagnetic concealment system that continuously monitors the RF environment, classifies emission signatures using on-device machine learning, and adaptively masks or mitigates the base's energy footprint in real time — without disrupting operational communications.
Software-Defined Radio (SDR) captures the wideband RF spectrum. A 1D CNN model running on TensorFlow Lite classifies emission types. An adaptive Wiener filter suppresses anomalous signatures. The FPGA coordinates signal processing at hardware speeds, while a LoRa mesh maintains secure inter-unit communication.
No equivalent indigenous solution exists in India's defence inventory. The system is solo-buildable, field-deployable, and designed for ruggedised forward-base conditions with a self-contained 3S4P LiPo power architecture — a category-defining product for India's electronic warfare needs.
The electromagnetic battlefield is evolving. Quantum sensing, quantum radar, and post-quantum cryptographic threats demand a defence system that is ready for the next era — not just the current one. ESMD Phase 2 is built for that future.
Post-quantum cryptographic protocols (CRYSTALS-Kyber, CRYSTALS-Dilithium) protect the LoRa mesh communication layer against future quantum decryption attacks. Inter-unit data exchange remains secure even against adversaries with quantum computing capability.
Integration pathways for quantum sensor arrays that leverage quantum entanglement and superposition to detect adversarial emissions below the classical noise floor. Phase 2 architecture accommodates quantum-RF sensors as they mature from lab to field.
As adversaries develop quantum radar systems capable of detecting conventionally masked signatures, ESMD Phase 2 incorporates quantum-resistant signature obfuscation — dynamic metamaterial-inspired RF shaping that degrades quantum radar coherence and reduces detection probability.
A hybrid classical-quantum ML architecture prepares ESMD for next-generation signal classification. Quantum kernel methods and variational circuits will augment the existing 1D CNN, enabling faster classification of novel emission types that classical models struggle to distinguish.
How India's self-reliance initiative is transforming the defence manufacturing landscape, reducing imports, and empowering indigenous startups.
Read Article →India's defence sector is undergoing its most significant transformation since independence. The Atmanirbhar Bharat (Self-Reliant India) initiative, launched with a bold vision to reduce import dependency, has fundamentally altered how the nation approaches military preparedness and technology development. Today, India is not just consuming defence technology — it is creating it.
The Government of India's mandate to achieve 75% indigenous content in defence procurement by 2027 represents one of the most ambitious industrial policy targets anywhere in the world. The creation of positive indigenisation lists — now spanning over 500 items that cannot be imported — has forced both established defence public sector undertakings (DPSUs) and private players to invest in domestic R&D and manufacturing capabilities.
The results are already visible. India's defence import dependency has dropped from approximately 70% in 2014-15 to under 40% in 2024-25. This is not a marginal improvement — it is a structural shift in how the world's largest democracy arms and equips its 1.4 million-strong military.
Perhaps the most exciting dimension of this transformation is the emergence of India's defence startup ecosystem. Supported by initiatives like iDEX (Innovations for Defence Excellence), MSME grants, and the Defence Startup Fund, hundreds of deep-tech startups are now building everything from autonomous drones and loitering munitions to AI-powered electronic warfare systems and satellite-based surveillance platforms.
The shift is not merely economic — it is strategic. A nation that depends on foreign suppliers for its critical defence needs can never be truly sovereign in its security decisions. Atmanirbhar Bharat in defence ensures that India's military choices are made in New Delhi, not in the boardrooms of foreign arms manufacturers.
From the Tejas fighter jet to the Akash missile system, from indigenous sonar suites to AI-driven battlefield management, India is proving that world-class defence technology can be conceived, designed, and built within its own borders. The journey has only begun, and the trajectory is unmistakably upward.
← Close ArticleAn in-depth look at how artificial intelligence and machine learning are strengthening India's electronic warfare systems.
Read Article →The modern battlefield is invisible. Wars are no longer won only on the ground — they are won and lost in the electromagnetic spectrum. Artificial intelligence is now India's most powerful weapon in this invisible war, transforming how the armed forces detect, classify, and neutralise electronic threats in real time.
Traditional electronic warfare systems relied on pre-programmed threat libraries — known frequencies, known modulation patterns, known emitters. This approach works against yesterday's adversaries. But modern threats are adaptive: frequency-hopping radios, low-probability-of-intercept (LPI) radars, and cognitive electronic warfare systems that change their behaviour the moment they detect they are being observed.
India's defence research establishment, led by DRDO's Defence Electronics Research Laboratory (DLRL) and Centre for AI and Robotics (CAIR), has been at the forefront of embedding AI into electronic warfare. Convolutional Neural Networks (CNNs) trained on vast signal datasets can now classify unknown emitters in milliseconds — a task that would take human analysts minutes or hours.
The real breakthrough is not in cloud-based AI — it is in on-device intelligence. Systems like the Energy Signature Masking Device (ESMD) run TensorFlow Lite models on edge hardware, classifying RF signatures and making adaptive masking decisions without any cloud connectivity. This is critical for forward bases where satellite uplinks are unreliable or deliberately disabled for operational security.
India's investment in AI-driven electronic warfare is not just keeping pace — it is creating asymmetric advantages. A relatively small investment in AI algorithms can neutralise multi-billion-dollar adversary systems. When an AI-powered masking device can hide an entire forward base's electromagnetic footprint, the cost-exchange ratio shifts dramatically in India's favour.
The future of electronic warfare is intelligent, adaptive, and Indian-built. The combination of DRDO's research depth, startup agility, and the armed forces' operational experience is creating a uniquely potent ecosystem that few nations can match.
← Close ArticleThe growing ecosystem of Indian defence startups building cutting-edge military hardware, from drones to AI-powered EW systems.
Read Article →For decades, the phrase "Indian defence manufacturing" conjured images of licence-produced Russian tanks and assembly-line Western helicopters. That era is ending. A new generation of Indian startups — engineers, scientists, and dreamers from IITs and DRDO labs — is building original military hardware that is not just indigenous but genuinely innovative.
The numbers tell a compelling story. India's defence startup ecosystem has grown from near-zero in 2018 to over 400 registered companies in 2025. These startups are not building me-too products — they are solving problems that legacy contractors have ignored for decades.
Large defence public sector undertakings excel at massive, complex programmes — building frigates, fighter jets, and missile systems that require decades of sustained investment. But they struggle with speed, iteration, and the kind of rapid prototyping that modern electronic warfare demands.
Startups operate differently. A small team of RF engineers and ML researchers can go from concept to working prototype in under 18 months. They can pivot their architecture mid-development when new threats emerge. They can adopt the latest AI models and SDR frameworks without navigating the procurement bureaucracies that slow larger organisations.
The missing piece is capital. Defence hardware is expensive to build, test, and certify. Indian defence startups need patient, mission-aligned investors who understand that the return cycle in defence is longer but the strategic impact — and the financial upside — is enormous. With India's defence budget crossing ₹6.2 lakh crore and a mandated shift toward indigenous procurement, the market opportunity has never been larger.
← Close ArticleHow India is building formidable signal intelligence and radio frequency warfare capabilities to counter emerging threats.
Read Article →In the high-altitude deserts of Ladakh and the dense forests of the Northeast, an invisible war plays out every second across the radio frequency spectrum. Signal intelligence — the art and science of intercepting, analysing, and countering adversarial communications — has become one of India's most critical defence capabilities, and the nation is investing heavily to maintain superiority.
India operates one of the most sophisticated signal intelligence networks in the developing world. The architecture spans satellite-based interceptors, airborne SIGINT platforms, ground-based direction-finding stations, and naval electronic support measures. Organisations like the Aviation Research Centre (ARC), National Technical Research Organisation (NTRO), and the Indian Army's Corps of Signals work in concert to provide real-time intelligence on adversarial deployments.
The integration of Software-Defined Radio (SDR) technology has been a game-changer. Unlike legacy hardware-defined receivers, SDR platforms can be reprogrammed in the field to monitor new frequency bands, decode new modulation schemes, and adapt to frequency-hopping threats — all through software updates rather than hardware replacement.
India's RF warfare capabilities have grown beyond passive intelligence gathering. The armed forces now deploy active jamming, spoofing, and electronic attack systems across multiple domains:
India's signal intelligence investments are driven by a two-front challenge. China's People's Liberation Army has invested heavily in cognitive electronic warfare — AI-driven systems that can autonomously detect, classify, and target Indian communications. Pakistan's ISI operates a capable signals intelligence apparatus with Chinese technical support.
India's response has been to leapfrog rather than catch up. By investing in AI-powered SIGINT, on-device machine learning, and autonomous electromagnetic masking, India is building capabilities that are not just matching but in some areas exceeding its adversaries'. The ESMD system — which can render an entire forward base electromagnetically invisible — is a prime example of this leapfrog strategy.
← Close ArticleWhy electromagnetic signature masking is the next frontier in battlefield survivability, and how Indian innovation is leading the charge.
Read Article →A forward military base in a contested region emits a symphony of electromagnetic signals: radio communications, radar pulses, satellite uplinks, drone control links, and the ambient RF noise of hundreds of electronic devices. To the adversary's signal intelligence systems, this chorus is as revealing as a spotlight in the dark — it broadcasts the base's location, size, operational tempo, and mission posture.
Modern SIGINT systems are extraordinarily capable. Adversary satellites, drones, and ground-based intercept stations can detect RF emissions across an enormous bandwidth — from HF through to millimetre-wave. Machine learning algorithms then classify these emissions with frightening accuracy, distinguishing between a brigade-level command post and a logistics depot in seconds.
For India's forward bases along the Line of Actual Control and the Line of Control, this detectability is a critical vulnerability. These bases are often in terrain where physical concealment is impossible — bare mountain ridges, open desert, or sparse high-altitude plateaus. Electromagnetic concealment becomes the only viable survival strategy.
Electromagnetic concealment is not simply "turning off the radios." Operational communications must continue. Instead, EM concealment systems continuously monitor the RF environment, identify which emissions are operationally necessary versus which are anomalous or unnecessary, and selectively suppress or mask the detectable signatures.
The ESMD system exemplifies this approach:
India's forward-base posture — driven by its geographic position between two nuclear-armed adversaries — makes EM concealment not a luxury but a survival necessity. The ability to operate forward bases electromagnetically silently gives India a decisive advantage: the adversary cannot target what it cannot detect.
With the ESMD programme, India is pioneering a category of defence technology that has no equivalent in the current indigenous inventory. This is not incremental improvement — it is category creation, and it positions India at the frontier of next-generation electronic warfare survivability.
← Close ArticleTracking India's remarkable journey from being the world's largest defence importer to an emerging exporter of military technology.
Read Article →For most of its post-independence history, India held an unenviable distinction: the world's largest arms importer. Year after year, billions of dollars flowed outward to purchase fighter jets, missiles, radar systems, and small arms from Russia, France, Israel, and the United States. That narrative is being rewritten — decisively.
India's defence exports have surged from approximately ₹1,500 crore in 2016-17 to over ₹21,000 crore in 2024-25 — a fourteen-fold increase in under a decade. The country now exports to over 85 nations, with key markets in Southeast Asia, the Middle East, Africa, and Latin America.
Several converging factors drove this transformation:
Policy clarity: The positive indigenisation lists removed ambiguity. Companies knew which items the military would procure domestically, allowing them to invest with confidence. The defence corridor initiatives in Tamil Nadu and Uttar Pradesh provided manufacturing infrastructure and tax incentives.
Startup energy: Private sector innovation, particularly from deep-tech startups, filled gaps that DPSUs had not addressed. These startups brought agility, modern engineering practices, and a willingness to tackle niche but critical problems — like electromagnetic signature masking.
Quality confidence: The Indian Army's deployment of indigenous systems — from the Akash missile in combat conditions to the Pinaka in high-altitude warfare — demonstrated that Indian-built systems could match or exceed imported alternatives. Export customers took notice.
India is still in the early chapters of its defence manufacturing renaissance. The gap between India and the top global exporters (US, Russia, France) remains significant. But the trajectory is clear: every year, more systems are designed in India, built in India, and proven in Indian conditions before being offered to the world.
The ESMD system embodies this trajectory — conceived by an Indian engineer, built with Indian components, designed for Indian operational conditions, and positioned to serve India's allies who face similar electronic warfare challenges. From import dependency to innovation leadership, India's defence story is just beginning.
← Close ArticleWe are seeking early-stage investment to accelerate hardware prototyping, field testing, and product development of the ESMD system.
If you are a defence-focused investor, family office, or strategic partner interested in deep-tech hardware built in India, we'd like to hear from you.