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June 01, 2018

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Uttam AESA radar: Everything you need to know

The Uttam is an advanced active phased array radar (APAR) system being developed by Electronics and Radar Development Establishment (LRDE) for the HAL Tejas and other combat aircraft of Indian Air Force. Development of Uttam started in 2008 and it was first unveiled at Aero India 2009. Uttam is slated to be a successor to hybrid passive electronically scanned array radar EL/M-2032 currently equipping LCA Tejas. Radar is currently being integrated with an LCA. Uttam AESA radar at Aero India 2017 Uttam being integrated with a prototype/LSP Tejas Difference between AESA and PESA radar: LRDE 3D MMR (left) and Uttam AESA radar (right). Notice the difference in size of the antenna array (Image credits: shiv@BRF, Trishul) Conventional passive phased array radars have a single high power RF source (usually Travelling Wave Tube) at ‘back-end’ and RF signals are fed into slotted array antenna via a waveguide or coaxial tube. Introduction of the phase difference between ea

Thoughts About the New Uttam AESA RADAR- MK1A (and some other stuff)

So, defense nuts recently nicked pics of a new variant (same but different) of Uttam Active Phased Array Radar. The tender was unusually information-rich (for a critical piece of technology slated to equip a combat aircraft). In case, that wasn't enough, LRDE proceeded to publish a screenshot of an MFD displaying tracking information. In the screenshots, Uttam appears to be keeping a 'FOX3-worthy' lock at a Tejas well beyond 140 kilometers and that's really something. Tejas easily has the lowest radar signature (for a non-stealth combat aircraft) in its class. Air-to-Air mode is where Uttam has exceeded expectations. It also has advanced NCTR and imaging capabilities. Another thing, there is a misconception that Uttam's operating power is 3.6KW,_ okay, no, it's not. It's actually the heat dissipated during the operation or in other words - its liquid circulation has to remove 3.6 KW of heat out of the array. The actual radiating power is several times the

Why Do We Need 'Super'-Swordfish Radar?

Swordfish is an advanced L-band active phased array radar developed by the Defence Research and Development Organization (DRDO). Unlike the most radars used by Indian forces, the Swordfish is capable of successfully detect, track and stop inbound ballistic missile threats. The radar was specifically built with Israeli assistance to meet the demands of a fledgling Indian Ballistic Missle Defence (BMD) system. The main reason for the high altitude requirement was to ensure that the inbound threat could be eliminated in outer space by exoatmospheric interceptors. EL/M-2080 Green Pine radar (Image: IAI Elta) Swordfish radar at a missile testing facility Swordfish has proven itself in over 10 successful missile interceptions including two* exo-atmospheric hit-to-kill (H2K) interception. The existing variant of radar has a range of 600-800 km and can detect targets as small as cricket ball at a long distance. The maximum target speeds up to which it can be tracked by Swordfish

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