N001 Myech (, literally Sword) is a Russian (former USSR) all-weather multimode airborne radar developed by the Tikhomirov Scientific Research Institute of Instrument Design (NIIP) for the Su-27 multi-role combat aircraft. Sukhoi Su-30MK3 incorporated the Panda upgrade package for the N001 radar, including a signal processor upgrade based on COTS software and a Ts-100 processor, and the new Pero passive phased array antenna (instead of the Myech cassegrain design), developed by NIIP and Ryazan GRPZ.