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Yours IAS > Blog > Defence Technology: Conventional, Emerging, and the Challenges Faced

Defence Technology: Conventional, Emerging, and the Challenges Faced

  • May 10, 2025
  • Posted by: Beauty Kumari
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Defence technology encompasses a wide array of weapons, equipment, vehicles, and infrastructure specifically designed for military purposes. This field includes the research, development, procurement, and deployment of systems intended to safeguard national security. With the advent of technologies such as cyber warfare, artificial intelligence (AI), and hypersonic missiles, the landscape of warfare is undergoing significant transformation. Technology is reshaping traditional military strategies, particularly in hybrid warfare scenarios, where the focus is shifting from human-centric tactics to advanced technological solutions.

In India, there has been a growing emphasis on strengthening the defence and aerospace sectors as part of the “Atma Nirbhar Bharat” (Self-Reliant India) initiative. The goal is to build indigenous manufacturing capabilities supported by research and development (R&D), ensuring India becomes less dependent on foreign defence imports.

Domains of Warfare

The concept of warfare has evolved to include different domains, each requiring specialized skills and capabilities. These domains are:

  1. Land Domain: This has historically been the primary arena for territorial disputes and expansion. The warfare was conducted on foot or using mechanized vehicles like tanks.
  2. Sea Domain: With the ability to navigate oceans, naval forces projected power across water bodies. The control over trade routes and territorial waters became vital for nations’ strategic interests.
  3. Air Domain: The invention of airplanes marked a revolutionary shift in warfare, allowing for rapid mobility and long-range strikes. Air power has since become a crucial element of military strategy, providing flexibility and reach.
  4. Space Domain: This is the newest frontier in military operations. Satellites are now integral for surveillance, communication, reconnaissance, and early warning systems. For example, India’s Mission Shakti, which was the country’s first anti-satellite missile test, marked a significant achievement in space warfare.
  5. Cyber and Electromagnetic Spectrum (EMS): Cyberwarfare focuses on attacking digital infrastructures, while EMS targets electromagnetic waves to disrupt enemy communications. These domains are interwoven, affecting all other warfighting domains. The DRDO’s DURGA 2 laser weapon is a prime example of India’s advancement in directed-energy weapons, a vital component of this domain.

Conventional Defence Technologies

Conventional defence technologies are established systems that have been in use for years, forming the backbone of military capabilities. These include:

  • Rifles and Firearms: Standard small arms such as rifles, pistols, and machine guns.
  • Tanks and Armored Vehicles: Battle tanks, armoured personnel carriers, and other military vehicles.
  • Aircraft: Fighter jets, bombers, transport planes, and helicopters.
  • Naval Vessels: Including submarines, warships, and aircraft carriers.
  • Missiles and Rockets: Systems like surface-to-air missiles, cruise missiles, and ballistic missiles.
  • Artillery: Large-caliber weapons like cannons, howitzers, and rocket launchers.
  • Electronic Warfare Systems: Devices that jam enemy signals or gather intelligence, such as radar and communication systems.
  • Cybersecurity Measures: Protection of military networks and communications.

Emerging Defence Technologies

Emerging technologies are advancing rapidly, revolutionizing military operations. These include:

  1. Artificial Intelligence (AI): AI is being utilized for tasks like data analysis and autonomous decision-making. For instance, the US Army’s Project Maven uses AI to process video data and improve targeting in drone strikes.
  2. Hypersonic Missiles: Missiles that travel at speeds greater than Mach 5 (five times the speed of sound). An example is Russia’s Kinzhal missile.
  3. Internet of Military Things (IoMT): A network that connects various military devices (like sensors, weapons, and vehicles) for enhanced situational awareness. This includes unmanned aerial vehicles (UAVs) or drones used for surveillance, targeting, and intelligence.
  4. Military Drones: Drones are remote-controlled aircraft used for surveillance, reconnaissance, and airstrikes. The MQ-9B armed drones from the US are notable examples.
  5. Robotics and Autonomous Systems: Robots designed to assist soldiers while keeping them out of harm’s way. The Daksh robot developed by DRDO is an example of a robot used for bomb disposal and other military operations.
  6. Stealth Technology: This technology reduces the visibility of military vehicles to radar and other detection systems. The F-22 Raptor and F-35 fighter jets are prominent examples.

India’s Defence Technology Sector

India’s defence technology sector has long been dominated by public sector companies like Hindustan Aeronautics Limited (HAL). However, in recent years, the government has begun to encourage private sector involvement in defence manufacturing. This shift is expected to create more opportunities and accelerate innovation.

India’s defence platforms include both indigenous and imported systems across a range of categories:

  • Missile Systems: India has developed several missile systems, including Agni, BrahMos, and ASTRA missiles, mainly under the Integrated Guided Missile Development Programme.
  • Helicopters: Examples include the Advanced Light Helicopter Dhruv, and Rudra and Prachand helicopters.
  • Fighter Jets: The HAL Tejas is a lightweight fighter jet, while AMCA and TEDBF are under development for future requirements.
  • Submarines: India’s INS Arihant, a nuclear-powered submarine, is part of its nuclear triad.
  • Aircraft Carriers: INS Vikrant, an indigenous aircraft carrier, boosts India’s naval power.

Challenges in India’s Defence Sector

India’s defence sector is undergoing significant modernization, but several challenges remain:

  1. Budget Constraints: Despite a substantial budget for defence, it constitutes only about 1.9% of India’s GDP, limiting the capacity for expansion and modernization.
  2. Technological Parity: Adversaries like China possess advanced technologies, making it essential for India to enhance its R&D capabilities to keep up.
  3. Dependence on Imports: India still relies heavily on foreign suppliers for crucial technologies such as jet engines and air defence systems.
  4. Innovation and R&D Ecosystem: While India has a growing R&D infrastructure, the sector lacks sufficient focus on defence-specific research. India spends only 0.8% of its GDP on overall R&D, with a low researcher density.
  5. Capital-Intensive Investments: The defence sector remains dominated by public sector undertakings, and there is a pressing need to attract private investment to foster innovation and modernization.
  6. Integration of MSMEs and Start-ups: The integration of micro, small, and medium enterprises (MSMEs) and start-ups into the defence supply chain has been limited, hampering potential growth.

Strategic Initiatives for Indigenization

India’s government has initiated several measures to boost indigenous defence production:

  1. Atmanirbhar Bharat: This initiative aims to reduce dependence on foreign imports and promote self-sufficiency in defence production.
  2. Defence Industrial Corridors: India has established two defence manufacturing hubs in Uttar Pradesh and Tamil Nadu to foster innovation and production.
  3. Defence Production and Export Promotion Policy (DPEPP): This policy promotes domestic production and aims to reduce reliance on imports while fostering defence exports.
  4. Technology Development Fund (TDF): A fund aimed at assisting Indian companies in developing cutting-edge defence technology.

India’s Defence Imports and Exports

While India continues to be one of the largest arms importers globally, it has made significant strides in defence exports. India’s defence exports reached a record high of approximately ₹16,000 crore in FY 2022-23. Key exports include BrahMos missiles to the Philippines and artillery guns to an unnamed country.

Conclusion

Despite substantial progress, India’s defence sector faces several challenges in achieving self-sufficiency and technological parity with adversaries. To overcome these, India must focus on enhancing its R&D capabilities, fostering private sector participation, and improving the integration of MSMEs and start-ups into the defence ecosystem.