Uttam AESA Radar fitted Tejas fighter jet spotted in Aero India 2021

Indigenously developed Uttam AESA Radar fitted Light Combat Aircraft (LCA) Tejas spotted in Aero India 2021. Uttam is a multi-mode, solid-state phased array radar under development by Electronics and Radar Development Establishment, a laboratory of the Defence Research & Development Organisation.

The Delhi Defense Review has posted the picture of Tejas fitted with AESA radar has gone viral.

LRDE has added another LCA to its Uttam testing program. LSP-03 has been integrated with the radar and will test it along with the Electronic Warfare systems under development. Electronics and Radar Development Establishment (LRDE) works in the area of design and development of ground-based, shipborne and airborne radars for the Indian Armed Forces.

What is a UTTAM Radar?

UTTAM Radar developed by India is intended to be used with HAL Tejas Mk.1A and HAL Tejas Mk.2 aircraft. With plans to implement a larger variant onboard India’s 5th Generation fighter aircraft HAL AMCA. Uttam AESA Radar Mark-1 is said to have a scanning range of over 250 KM. While the bigger Mark-2 under development is said to have a range of over 400Km.

MOD India- Earlier Picture for Tejas fitted with UTTAM Radar.

It is a liquid cooled AESA radar featuring quad band modules that can be stacked to form a larger unit. This allows the manufacturer to scale the radar to be used in larger aircraft. There are plan afoot to create a larger scalable design to be used in India’s 5th Generation fighter aircraft HAL AMCA.

Making the latest picture of Tejas MK1 fitted with UTTAM Radar a special sight for the Indian defense community.

Some of the key features of UTTAM Radar :

Full solid-state (electronics) radar, based on GaAs

High MTBF (redundancy)
Extended detection range

Multi-Target Tracking (100 Target), Priority Tracking.

Simultaneous operation modes.
Solid-state, active phased array technology.

Pulse-Doppler, all aspect, shoot down capabilities.

Simultaneous multi-target tracking and engaging.

Simultaneous multi-mode operation
High ECM immunity.

Ultra-low side-lobe antenna.

Flexible interfaces allowing scalable design.

Modular hardware and software.

Fast-beam agile system.

Quad-band TRM modules pack.

High mission reliability (built with redundancy).

IFF modes.

C-band LOS, Ku band Satcom link.

Operational Mode of Uttam Radar :

Uttam AESA radar has a total of 18 modes in Air to Air, Air to Ground, and Air to Sea. The modes have been validated on-board a business jet and further proofing is being done on HAL Tejas to validate the same on the supersonic platform.

Air-to-Air consists of about 60% of radar testing.

Air-to-Air:
TWS/Multi-target detection and tracking
Multi-target ACM
High-resolution raid assessment

Air-to-Ground:
High-resolution imaging (SAR Mode)
High resolution tracking (SAR Mode)
AGR – Air-to-Ground Ranging
RBM – Real Beam Map
DBS – Doppler Beam Sharpening
GMTI on RBM, SAR Weather

Air-to-Sea:
High-resolution imaging (SAR Mode)
High resolution tracking (SAR Mode)
Sea search and multi-target tracking
RS and ISAR classification modes.

Sources with images : Wikipedia, Delhi Defense Review