Aesa Radar â€ Uttam â€ for Tejas MK-II been tested Air-to-Air mode (link) The state-run Defence Research and Development Organization (DRDO) which has taken up the development of flight control radar for fighter aircraft with 100 km range and multi-mode operation. AESA radar development which has been started under Project â€ Uttam â€ which is a Sanskrit word for â€ Best â€ . Realisation and calibration of prototype Active Aperture Array Antenna Unit (AAAU) has been completed with indigenous TR modules . DRDO currently has placed Airworthy radar processor and exciter receiver on a high rise platform in Mechanical Scanned Array (MSA) configuration for validation of various algorithms and wave-forms of the fie control radar . Software development for air-air sub-modes have been completed and DRDO is testing Radar in Air-to-Air mode but crucial software block testing will be development of software which will allow air-to-ground modes which is crucial for aircraft to carryout high resolution mapping, multiple ground moving target detection and track, combat identification, electronic warfare, and ultra high bandwidth communications. Project is still a long way from completion and DRDO still has not clarified if Israeli help has been sought in its development nor what level of indigenous content will be used in the radar . work on indigenous TR modules started in 1998 after successful development , Radar development was cleared in 2011-12 period . First Tejas MK-2 Prototype will take to sky by 2018-19 and will enter Production by 2022 and it is expected that AESA Uttam will be ready and enter Production.