DRDO Developing Lightweight Precision Air-to-Ground Missile for India’s Future UAV Fleet
The Defence Research and Development Organisation (DRDO) is reportedly advancing the development of a lightweight air-to-ground (A2G) missile designed for India’s next generation of Medium Altitude Long Endurance (MALE), High Altitude Long Endurance (HALE), and Unmanned Combat Aerial Vehicles (UCAVs). Despite its compact size, the missile is expected to deliver precision strike capability against a broad spectrum of battlefield targets while enabling unmanned platforms to carry larger weapon payloads.
According to available information, the missile is expected to weigh between 10 and 15 kilograms, measure approximately 1.5–2 meters in length, and carry a 1–2 kg warhead. It will incorporate an Inertial Navigation System (INS) integrated with a Selective Availability Anti-Spoofing Module (SAASM)-enabled navigation chip, improving resilience against GPS spoofing and electronic warfare.
The reported specifications naturally raise questions about the missile’s armour penetration capability. From an engineering standpoint, achieving penetration of approximately 700 mm of Rolled Homogeneous Armour (RHA) with such a lightweight weapon would be highly challenging.
Modern anti-tank guided missiles capable of defeating 700–1,000 mm RHA generally rely on large tandem High-Explosive Anti-Tank (HEAT) warheads weighing several kilograms. Penetration performance depends primarily on the diameter of the shaped charge rather than the missile’s overall weight.
With only 1–2 kg allocated for the warhead, the available internal volume for a large-diameter tandem HEAT charge is significantly constrained. Once space is reserved for the seeker, navigation electronics, batteries, control systems, propulsion unit, and airframe, relatively little capacity remains for an armour-piercing payload. As a result, consistently penetrating 700 mm RHA protected by Explosive Reactive Armour (ERA) would likely be difficult.
However, limited anti-armour capability does not diminish the missile’s operational value. Rather than replacing heavier systems such as HELINA, Dhruvastra, or Nag, the new weapon appears intended as a lightweight precision munition optimized for engaging a wide range of battlefield targets while allowing drones to carry multiple missiles per sortie.
Potential targets include artillery positions, air-defence radars, logistics vehicles, command posts, communications infrastructure, fuel storage facilities, parked aircraft, coastal surveillance systems, light armoured vehicles, and infantry fighting vehicles. Against these targets, a precisely guided 1–2 kg warhead can deliver significant operational effects.
Even against heavily protected main battle tanks, the missile could remain effective through specialized attack profiles. Modern tanks typically have weaker roof armour than frontal protection, allowing top-attack engagements against turret roofs, engine compartments, or exposed sensors to achieve mobility or mission kills without requiring complete armour penetration.
DRDO could also explore fragmentation, thermobaric, or multi-purpose blast warheads, expanding the missile’s effectiveness against infantry concentrations, bunkers, and lightly protected military vehicles.
One of the missile’s greatest advantages is its low weight. Since MALE and HALE UAVs have limited payload capacities, a 10–15 kg weapon enables a single aircraft to carry several precision-guided missiles instead of one or two larger anti-tank weapons. This significantly increases sortie effectiveness and provides greater flexibility when engaging dispersed targets.
Platforms including TAPAS, Archer-NG, future indigenous HALE UAVs, and the Ghatak UCAV could potentially deploy multiple lightweight precision weapons during a single mission, providing persistent battlefield support.
The inclusion of SAASM-enabled navigation represents another important capability enhancement. By authenticating encrypted GPS signals, SAASM technology improves resistance to navigation spoofing and jamming. Combined with INS guidance, the missile can maintain accurate navigation even in heavily contested electromagnetic environments where satellite navigation may be disrupted.
As electronic warfare becomes increasingly prevalent on modern battlefields, this combination of INS and anti-spoofing technology will improve both accuracy and survivability against electronic countermeasures.
Affordability is also expected to be a defining feature of the programme. Recent conflicts have demonstrated that low-cost precision-guided munitions often provide greater operational value than maintaining limited inventories of expensive missiles. An indigenous, affordable A2G missile would enable sustained strike operations while reserving heavier anti-armour weapons for high-value targets.
Overall, the reported specifications suggest that DRDO is not attempting to develop another heavyweight anti-tank missile. Instead, the programme appears focused on delivering a cost-effective, highly accurate, and electronically resilient precision weapon capable of significantly enhancing the strike capabilities of India’s future unmanned combat aircraft.
