SOURCE: IDRW.ORG
At the Aero India 2025 show, India’s Defence Research and Development Organisation (DRDO) showcased a significant advancement in naval surveillance technology with the introduction of the ‘Shyen’ sensor suite, designed to modernize the Indian Navy’s Dornier Do 228 maritime patrol aircraft.
The ‘Shyen’ suite is a comprehensive package that includes a maritime surveillance radar, an electronic support measures (ESM) system, an electro-optic/infrared (EO/IR) system, and a software-defined radio (SDR) for communications. This suite enhances the aircraft’s capabilities in maritime domain awareness and threat detection.
Named ‘Kshitij’, this radar is a long-range, multirole, active electronically scanned array (AESA) system, pivotal for detecting both sea surface and airborne targets. It provides various operational modes including synthetic aperture radar (SAR) for high-resolution imaging, ground moving target indicator (GMTI) for tracking movements on land, and specific modes for weather and search-and-rescue operations. The radar integrates with an automatic identification system (AIS), EO/IR imaging, and Automatic Dependent Surveillance–Broadcast (ADS-B), employing AI for enhanced target classification.
This component of the suite offers wideband coverage from VHF to Ka-band, providing a high probability of intercept, crucial for electronic warfare and intelligence gathering by detecting enemy radar emissions.
The EO/IR system is engineered to deliver high-definition imagery, significantly improving target identification and reconnaissance capabilities from the air. The SDR communication suite ensures that all sensor data can be effectively relayed back to naval commanders, facilitating real-time decision-making and operational coordination.
DRDO officials highlighted that the ‘Kshitij’ radar utilizes around 600 gallium nitride (GaN)-based transmit/receive (T/R) modules, arranged in a tiled configuration, allowing for sub-meter resolution in target detection. This technological leap is a testament to India’s growing prowess in radar technology, particularly with AESA systems, which are known for their advanced electronic steering capabilities and reduced maintenance needs due to solid-state components.
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