Instruments Research and Development Establishment (IRDE) core competence lie in the design and development in the fields of optical, electro-optical and optronic instrumentation for surveillance, reconnaissance, piloting, navigation, guidance, target identification and acquisition, designation, ranging and countermeasures under all weather conditions during day and night. Fire control systems and devices. Infra-red search and track systems. Stand-alone surveillance systems. Optical design, holography, optical image processing and photonic target recognition techniques, adaptive optics, integrated optics, micro-optics and nano-photonics, terahertz sources and imaging and stabilised payload.