Uttam is a solid-state gallium arsenide (GaAs) based active electronically scanned array (AESA) radar under development by the Electronics and Radar Development Establishment (LRDE), a laboratory of the Indian Defence Research and Development Organisation (DRDO). It is a low probability of intercept radar intended to be installed on the HAL Tejas Mark 1A, HAL Tejas Mark 2 and HAL TEDBF aircraft with plans to implement a larger and more powerful variant on-board India's 5th Generation fighter aircraft, the HAL AMCA.