Reconnaissance planes generally do not carry weapons, and mainly rely on their high-speed performance and the installation of electronic countermeasures equipment to improve their survivability. Usually equipped with aerial camera, forward-looking or side-looking radar, TV and infrared reconnaissance equipment, and some are also equipped with real-time information processing equipment and transmission devices. Reconnaissance equipment is installed in engine room or cabin. Reconnaissance planes can conduct visual reconnaissance, phase reconnaissance and electronic reconnaissance. Phase formation reconnaissance is an important means for reconnaissance aircraft to carry out reconnaissance, including visible light photography, infrared photography and phase formation, radar phase formation, microwave phase formation and television phase formation.