India to replace Su-30MKI Russian radar with indigenous Virupaksha system

India is modernizing its Su-30MKI fighter jet fleet through the Super Sukhoi programme, which involves replacing aging Russian-origin radar systems with a homegrown radar named Virupaksha. Developed by the Defence Research and Development Organisation (DRDO), the new system aims to upgrade the aircraft's detection capabilities without requiring a new airframe.

A key component of the radar, the Active Antenna Array Unit (AAAU), is being constructed by Astra Microwave Products in collaboration with DRDO engineers. The AAAU utilizes Gallium Nitride, a material that provides greater energy efficiency, improved resistance to electronic interference, and reduced weight compared to older technologies.

Once operational, the Virupaksha radar is expected to detect conventional aircraft at distances of 300 to 400 kilometers and maintain detection of stealth aircraft beyond 200 kilometers. The estimated cost for an initial batch of 84 aircraft is between ₹60,000 and ₹65,000 crore, a figure currently awaiting approval from the Cabinet Committee on Security.