Defence Technology UPSC PPT Notes

Defence Technology UPSC PPT Notes

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  • Defence is a paramount aspect of national security, involving a multifaceted approach that encompasses a diverse range of technologies to safeguard borders, citizens, and strategic assets. In this article, we delve into the various components of defence technologies, from advanced weaponry to sophisticated surveillance systems, highlighting the holistic strategies employed by nations to ensure their security.

Defence Technology UPSC PPT Notes – (PPT Lec 14)


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Securing the Skies and Beyond: A Comprehensive Overview of India’s Defence Capabilities

In the ever-changing landscape of global security, India’s Defence Research and Development Organization (DRDO) stands as a bulwark, continually innovating and advancing the nation’s defence capabilities. From surface-to-surface missiles to cutting-edge hypersonic technologies, India’s defence arsenal is a testament to its commitment to national security. This article provides a detailed exploration of the diverse components of India’s defence apparatus, covering missiles, tanks, submarines, aircraft, and advanced technologies.

1. DRDO: Pioneering Defence Innovation

The Defence Research and Development Organization (DRDO) is the cornerstone of India’s defence capabilities. With a mission to enhance self-reliance in defence technologies, DRDO plays a pivotal role in developing cutting-edge systems and solutions.

Below is a table highlighting the key aspects of the Defence Research and Development Organization (DRDO) and some of its notable contributions to defence innovation:

Aspect DRDO: Pioneering Defence Innovation
Establishment Formed in 1958, DRDO is India’s premier government agency tasked with the development of indigenous defence technologies and systems.
Mission DRDO’s mission is to enhance self-reliance in defence technologies and contribute to India’s national security by developing cutting-edge, state-of-the-art defence systems.
Research Areas DRDO engages in research across a wide spectrum, including missiles, radars, electronic warfare, aerospace systems, naval systems, armaments, and more.
Innovation and Technology Development DRDO focuses on pioneering research, design, and development of advanced technologies to meet the evolving requirements of the Indian armed forces.
Collaborations Collaborates with various government agencies, academic institutions, and private sector companies to leverage expertise and resources for defence research and development.
Strategic Capabilities Develops strategic capabilities to enhance India’s deterrence posture, including nuclear triad capabilities, missile defence systems, and advanced surveillance technologies.
Missile Systems Has played a pivotal role in the development of various missile systems, including ballistic missiles like Prithvi, Agni, and anti-tank guided missiles like Nag and Helina.
Aerospace Technologies Contributes to the advancement of aerospace technologies, including the development of indigenous aircraft, unmanned aerial vehicles (UAVs), and avionics systems.
Naval Systems DRDO has been instrumental in the development of naval systems, including sonars, torpedoes, and missile systems, enhancing India’s maritime capabilities.
Electronics and Communication Systems Focuses on cutting-edge electronics and communication systems, such as radars, electronic warfare systems, and communication networks for secure and reliable military communication.
Cybersecurity and Network Centric Warfare Recognizing the importance of cybersecurity, DRDO actively contributes to developing technologies for secure communication, network-centric warfare, and protection against cyber threats.
Notable Contributions Integrated Guided Missile Development Programme (IGMDP): Spearheaded by DRDO, IGMDP led to the development of critical missiles like Prithvi, Agni, Akash, and Nag.
BrahMos Missile System: A joint venture with Russia, the BrahMos supersonic cruise missile is a testament to DRDO’s collaborative efforts in developing cutting-edge missile technology.
Tejas Aircraft: DRDO’s Aeronautical Development Agency (ADA) developed Tejas, India’s first indigenous multi-role light combat aircraft, showcasing advancements in aerospace technology.
Arjun Main Battle Tank: DRDO’s contribution to armoured warfare, the Arjun tank, incorporates advanced features, making it one of the most potent main battle tanks in its class.

DRDO’s relentless pursuit of innovation and technological excellence has significantly contributed to India’s defence capabilities, ensuring the nation’s readiness to meet contemporary and future security challenges.

Also read:

2. Types of Missiles: A Varied Arsenal

Below is a table providing an overview of various types of missiles in India’s defence arsenal, including examples of each type:

Missile Type Examples Description
Surface-to-Surface Missiles – Prithvi & Agni Series These missiles are designed to be launched from a surface platform and target enemy installations, troop concentrations, or strategic locations on land.
– Agni Prime Agni Prime is a newly developed intercontinental ballistic missile (ICBM) that extends India’s land-based strategic deterrent capabilities.
– Surya Surya is a conceptual missile representing the next generation of ICBMs, designed for extended ranges and enhanced capabilities in strategic deterrence.
Surface-to-Air Missiles – Trishul Trishul is a quick-reaction, short-range surface-to-air missile designed for air defence against a variety of airborne threats.
– Akash Akash is an indigenous medium-range surface-to-air missile system, providing air defence cover against a range of aerial threats.
– QR SAM The Quick Reaction Surface-to-Air Missile system ensures rapid response to incoming aerial threats, enhancing air defence capabilities.
– BVRAAM (Beyond Visual Range Air-to-Air Missiles) Examples like Astra represent long-range air-to-air missiles, ensuring India’s air dominance capabilities by engaging targets beyond visual range.
Air-to-Air Missiles – Barak-8 Barak-8 is a long-range missile system designed for air defence against aircraft, helicopters, and drones, ensuring protection for naval and land-based assets.
– IGLA-S IGLA-S is a man-portable air defence system designed for engaging low-flying and slow-moving targets, providing infantry units with anti-aircraft capabilities.
– VL-SRSAM The Very Short Range Surface-to-Air Missile system provides close-range air defence capabilities for naval platforms, enhancing shipborne air defences.
Cruise Missiles – NIRBHAY NIRBHAY is a subsonic long-range land-attack cruise missile designed for precision strikes against specific ground targets.
– BRAHMOS BRAHMOS is a supersonic cruise missile developed in collaboration with Russia, known for its speed and precision, with applications in both naval and land-based scenarios.
– BRAHMOS 2 An upgraded version of BRAHMOS, BRAHMOS 2 aims for hypersonic speed capabilities, further enhancing its capabilities for rapid and precise strikes.
– HD-1, TOMAHAWK, SEA BREAKER, P-800 A diverse array of cruise missiles, showcasing India’s capabilities in naval warfare and strategic precision strikes.
Hypersonic Missiles – (Currently in Development) Hypersonic missiles are currently in development and aim to achieve speeds beyond the supersonic range, making them extremely challenging to intercept and enhancing strategic capabilities.
Anti-Tank Guided Missiles (ATGM) – NAG NAG is a third-generation fire-and-forget ATGM designed for use against tanks and armored vehicles, offering precision strike capabilities on the battlefield.
– Helina Helina is an air-launched version of NAG, extending its reach and versatility, providing airborne platforms with anti-tank guided missile capabilities.
Missile Defence Systems – AD-1 AD-1 represents an advanced missile defence system designed to intercept and neutralize incoming threats, safeguarding critical assets and ensuring national security.
– High Energy Laser System (Under Development) High Energy Laser Systems aim to use laser technology for precision targeting and neutralizing of incoming threats, showcasing advancements in missile defence capabilities.

India’s diverse missile arsenal reflects its commitment to national security, with a range of capabilities addressing various threats and scenarios.


3. Anti-Tank Guided Missiles (ATGM): Precision on the Battlefield

Below is a table providing an overview of Anti-Tank Guided Missiles (ATGMs), including examples of these precision-guided munitions and their characteristics:

ATGM Name Type & Launch Platform Range, Guidance, Warhead
NAG Third-Gen ATGM Man-Portable, Vehicle-Mounted
Range: 500m to 4km
Guidance: Imaging Infrared (IIR) Seeker
Warhead: Tandem HEAT (High-Explosive Anti-Tank)
Helina Air-Launched ATGM Helicopters, UAVs
Range: Up to 7km
Guidance: Imaging Infrared (IIR) Seeker
Warhead: Tandem HEAT (High-Explosive Anti-Tank)

These ATGMs exemplify precision on the battlefield, offering advanced guidance systems and potent warheads for effective engagement of armored targets. They play a crucial role in providing infantry and airborne units with the capability to neutralize enemy tanks and armored vehicles with accuracy and efficiency.

4. Tanks: Zoravar and ATAGS

Here’s a table providing an overview of the Zoravar Tank and the Advanced Towed Artillery Gun System (ATAGS):

Tank Name Type Main Features
Zoravar Main Battle Tank – Type: Main Battle Tank
– Weight: Approximately 50 tons
– Armament: 125mm smoothbore gun, anti-aircraft machine gun, co-axial machine gun
– Engine: 1,000 HP engine for enhanced mobility and speed
– Armour: Composite and modular armour for increased protection
– Fire Control System: Advanced fire control system for accurate targeting and engagement
– Mobility: Improved mobility for varied terrains and operational scenarios
ATAGS Artillery Gun System – Type: Advanced Towed Artillery Gun System
– Caliber: 155mm
– Range: Capable of firing at extended ranges
– Rate of Fire: High rate of fire for sustained artillery support
– Mobility: Towable, providing flexibility in deployment and repositioning
– Automated Features: Incorporates advanced automation for loading and aiming, reducing crew fatigue
– Accuracy: Precision-guided aiming systems for accurate artillery strikes
– Versatility: Can fire a variety of ammunition types, including advanced projectiles

This table offers a snapshot of the main features of both the Zoravar Main Battle Tank and the Advanced Towed Artillery Gun System (ATAGS), showcasing their capabilities in terms of firepower, mobility, and technological advancements.

5. Helicopters, Planes, and Submarines: A Triad of Defence Mobility

Below is a table providing an overview of some helicopters, planes, and submarines in India’s defence arsenal:

Name Type Main Features
HSTCV & SHAURYA Helicopters – Type: Heavy Support and Transport Helicopter (HSTCV), Advanced Light Helicopter (SHAURYA)
– Role: Troop transport, logistics support, search and rescue
– Payload Capacity: HSTCV – Can carry infantry troops and vehicles, SHAURYA – Versatile light helicopter with multi-role capabilities
– Technology: Advanced avionics and systems for navigation and mission execution
– Mobility: Designed for operations in diverse terrains and challenging environments
Avangrad & Kinzhal Planes – Type: Avangrad (Fighter Aircraft), Kinzhal (Air-Launched Hypersonic Missile System)
– Avangrad: State-of-the-art fighter aircraft with advanced avionics, radar, and weaponry
– Kinzhal: Air-launched hypersonic missile with the capability to strike a variety of targets at high speeds
– Role: Avangrad – Air superiority, Kinzhal – Precision strike capability
– Speed: Kinzhal – Hypersonic speeds for rapid target engagement
Project 75 & 75i Submarines – Type: Scorpène-class submarines (Project 75), Future submarines under Project 75i
– Features: Advanced stealth capabilities, equipped with torpedoes and anti-ship missiles
– Role: Strategic deterrence, anti-submarine warfare, intelligence gathering
– Technology: AIP (Air-Independent Propulsion) technology for extended underwater endurance
– Mobility: Submersible vessels capable of operating in deep-sea environments

This table highlights the diversity of defence mobility assets, including helicopters, planes, and submarines, each designed for specific roles and equipped with advanced technologies to meet the challenges of modern warfare.

6. Advanced Technologies: Defending with Precision

Below is a table providing an overview of advanced technologies in the context of defence, showcasing their capabilities and applications:

Technology Example Applications and Features
Artificial Intelligence (AI) AI in Military Operations – Autonomous systems, decision support, predictive analytics, threat detection
– Enhances situational awareness, aids in mission planning, and optimizes logistics
Blockchain Technology Secure Communication – Tamper-resistant data storage, secure transactions, cryptographic verification
– Ensures the integrity and security of sensitive military and communication data
Cybersecurity Solutions Advanced Cyber Defense – Protection against cyber threats, intrusion detection, encryption
– Safeguards military networks, critical infrastructure, and sensitive information
Quantum Computing Quantum Cryptography – Ultra-secure communication, unbreakable encryption, advanced data processing
– Enhances cryptography and secure communication, tackles complex computational problems
Directed Energy Weapons (DEWs) Laser Weapon Systems – Precision targeting, speed-of-light engagement, reduced collateral damage
– Anti-drone capabilities, missile defense, counter-electronics warfare
Stealth Technology Stealth Aircraft – Reduced radar cross-section, infrared suppression, acoustic dampening
– Enhances survivability, enables covert operations, reduces susceptibility to enemy detection
Biometric Authentication Biometric Access Control – Secure access to sensitive areas, identity verification, personnel tracking
– Enhances physical and digital security, ensures only authorized personnel have access
Space-Based Technologies Satellite Surveillance – Earth observation, reconnaissance, communication relay, navigation
– Improves strategic intelligence, enables precision-guided weaponry, supports global communication and positioning
Hypersonic Technology Hypersonic Missiles – Ultra-high speed, rapid target engagement, increased maneuverability
– Strategic deterrence, precision strike capabilities, challenging to intercept
Biological and Chemical Sensors CBRN Detection Systems – Early detection of chemical, biological, radiological, and nuclear threats
– Protects against unconventional threats, supports military personnel safety
Unmanned Aerial Vehicles (UAVs) Military Drones – Surveillance, reconnaissance, intelligence gathering, precision strikes
– Provides real-time situational awareness, minimizes risk to human personnel, extends operational capabilities
Augmented Reality (AR) and VR AR/VR Training Simulations – Immersive training environments, mission rehearsal, skill enhancement
– Improves training effectiveness, reduces costs, enhances decision-making skills

This table illustrates how advanced technologies contribute to enhancing defence capabilities, providing precision, security, and efficiency in various aspects of military operations.

7. Drones, Portable Launchers, Mines, and Missile Evaluation System: A Holistic Approach to Defence

Below is a table providing an overview of drones, portable launchers, mines, and missile evaluation systems in the context of a holistic approach to defence:

Technology Example Applications and Features
Unmanned Aerial Vehicles (UAVs) Heron TP Drone – Surveillance, reconnaissance, intelligence gathering, target acquisition
– Real-time situational awareness, aerial monitoring, strategic reconnaissance
Portable Launchers MANPADS (Man-Portable Air-Defense Systems) – Quick-response anti-aircraft capability, mobile air defense, infantry support
– Portable and versatile, designed for use by ground forces, capable of engaging low-flying aircraft and helicopters
Mines Anti-Personnel and Anti-Tank Mines – Area denial, protection of strategic assets, obstacle creation
– Various types for different purposes, can be remotely triggered or have passive activation mechanisms
Missile Evaluation System Integrated Missile Evaluation System (IMES) – Evaluation of missile system performance, target tracking and engagement analysis
– Provides data on accuracy, range, and effectiveness, aids in refining missile systems and strategies

This table highlights how these technologies collectively contribute to a holistic approach to defence, covering aerial surveillance, anti-aircraft capabilities, strategic ground defence, and the evaluation of missile systems for continuous improvement.


  • India’s defence capabilities, as showcased by DRDO and the armed forces, reflect a commitment to technological innovation, self-sufficiency, and national security. The diverse array of missiles, tanks, aircraft, and advanced technologies exemplifies the nation’s readiness to defend its borders and interests. As geopolitical landscapes evolve, India’s defence prowess continues to stand as a testament to its determination to secure its citizens and uphold its sovereignty.

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