As DRDO AESA radar project nearing completion ,India has already made significant progress in the development of AESA (Active Electronically Scanned Array) radar through indigenous projects AESA radar . . Key programs include the Uttam AESA radar for Tejas Mk1A and Tejas Mk2 fighter jets, the Super Sukhoi upgrade program for Su-30MKI aircraft, and the Veerupaksha AESA radar for AEW&C (Airborne Early Warning & Control) platforms.
These systems are being developed by organizations such as DRDO’s LRDE, BEL, and HAL, and are designed to provide long-range detection, multi-target engagement, and a low probability of intercept (LPI). By focusing on indigenous radar technology, India not only strengthens its self-reliance but also ensures that future fighters like the AMCA (Advanced Medium Combat Aircraft) are equipped with world-class radar systems.
Understanding the Significance of DRDO AESA Radar
An Active Electronically Scanned Array (AESA) radar is an advanced type of phased array radar that represents a major leap over older mechanically scanned systems. Instead of relying on a single moving antenna to direct beams, AESA radars use thousands of tiny transmit/receive (T/R) modules. Each module is capable of generating and receiving its own signal, and by adjusting the phase and frequency of these signals, the radar can electronically steer its beam in different directions almost instantly.
This electronic beam steering offers several important advantages. First, it makes AESA radars significantly faster and more precise compared to mechanically scanned radars, which require physical movement of the antenna to cover different sectors. Second, with no moving parts involved in beam steering, AESA radars are more reliable, require less maintenance, and have a longer operational lifespan.
Another key advantage lies in survivability and stealth. AESA radars can rapidly change frequencies, split beams, and use low probability of intercept modes, making them much harder to detect, jam, or spoof by enemy electronic warfare systems. This ability greatly enhances the survivability of the aircraft or platform using the radar.
Finally, AESA radars offer multi-target tracking and simultaneous engagement capabilities. They can track multiple enemy aircraft, guide missiles, and even perform surveillance and ground mapping at the same time. Because of these features, AESA radars have become the standard for modern fighter jets, warships, and air defense systems, giving armed forces a decisive technological edge.
Uttam AESA Radar (Tejas Mk1A and Mk2)
The Uttam AESA radar, developed by DRDO’s LRDE and produced by BEL, represents a major leap in India’s fighter jet capabilities. Designed for the Tejas Mk1A and the upcoming Tejas Mk2, Uttam can:
Detect fighter-sized targets at ranges of over 150 km.
Track up to 50 targets simultaneously and engage multiple threats.
Resist electronic jamming and provide superior reliability.
This radar equips Tejas with cutting-edge capabilities for both air-to-air and air-to-ground combat, giving it an edge against modern threats.
Super Sukhoi Program
Indian airforce operating Su-30MKI fighter fleet, which is main backbone of the Indian Air Force (IF), as of now is undergoing a major upgrade under the Super Sukhoi program. This ambitious modernization program is designed to improve and extend the operational life and combat capabilities of the aircraft, by ensuring it remains one of the most formidable platforms for Airforce well into the future.
Main part of this program is the replacement of the older Russian-origin Bars radar system with a state-of-the-art indigenous AESA (Active Electronically Scanned Array) radar. This is to improvise and upgrade capacity with use of self-reliance in defence technology, while also providing the Su-30MKI with advanced capabilities to match global standards.
With the integration of AESA radar technology, the upgraded Su-30MKI have game-changing improvements:
Extended detection ranges.
Advanced multi-target tracking.
Compatibility with next-generation weapons.
These upgrades with AESA Helps to improve capacity and also allow the aircraft to carry modern precision-guided munitions, long-range standoff weapons, and advanced air-to-air missiles.
The cumulative efforts made in project is make improvements and transform the Su-30MKI into a highly capable 4.5-generation fighter jet. It will not only maintain air superiority but also perform ground attack, maritime strike, and electronic warfare roles with far greater efficiency. Ultimately, the Super Sukhoi upgrade ensures that the Su-30MKI continues to remain the mainstay of the IAF’s combat fleet for decades to come, while reducing dependency on foreign systems.
Veerupaksha AESA Radar
The Veerupaksha AESA radar, unveiled by DRDO, is designed for AEW&C aircraft. Its features include:
Long-range detection of threats, including stealthy aircraft.
High-resolution tracking for superior situational awareness.
Advanced electronic scanning for real-time battle management.
This radar will greatly strengthen India’s airborne surveillance and command network, improving both defensive and offensive air operations.
How Does AESA Radar Work?
An AESA radar operates using thousands of small T/R modules, each acting as a mini antenna. These modules can steer the radar beam electronically in microseconds, eliminating the need for mechanical rotation. This allows the radar to:
Track multiple targets simultaneously (aircraft, missiles, or ships).
Switch tasks rapidly between surveillance, tracking, and targeting.
Remain difficult for enemy sensors to detect, thanks to Low Probability of Intercept (LPI).
Advantages of AESA Radar
AESA radars are considered a game-changer in modern air combat because they offer:
High detection ranges with pinpoint accuracy.
Strong resistance to jamming, ensuring reliability in hostile conditions.
Stealth and security, making them harder for enemies to intercept.
Multi-role capability, from surveillance to electronic warfare.
Low maintenance and long lifespan, due to the absence of moving mechanical parts.
Conclusion
With projects like Uttam, Super Sukhoi, and Veerupaksha, India is building a strong ecosystem of indigenous AESA radars. These systems not only enhance the performance of current fighters like Tejas and Su-30MKI but also pave the way for advanced platforms like the AMCA. By mastering this critical technology, India is ensuring self-reliance, strategic independence, and a stronger position in modern aerial warfare.
1 thought on “India’s Indigenous AESA Radar of DRDO: Uttam, Super Sukhoi, and Veerupaksha”