How do air defense missiles track multiple targets?

Only air defense missiles cannot intercept and track multiple targets. What you want to ask is the air defense missile weapon system, right? Because the air defense missile weapon system is an air defense missile used to intercept air flying targets and all technical equipment serving them. Air defense missile weapon system includes search, identification, tracking and indication system, guidance system, command and control system, air defense missile, launching system and technical support equipment. The air defense missile weapon system began to develop in the 1950s, and in the 1970s, an air defense system combining long, medium, short range, high, medium and low altitude was formed. Air defense missile weapon system is divided into national air defense, field air defense and ship air defense according to combat tasks. According to the ground mobility, it can be divided into fixed, semi-fixed and mobile, of which mobile is divided into traction, self-propelled and portable; According to the number of targets intercepted at the same time, it can be divided into single-target channel and multi-target channel air defense missile weapon systems. The search equipment in the search, identification, tracking and indication system is mostly special radar, and optical equipment is also used to search for the target and determine the parameters of the target. Identification equipment is used to determine the friend-or-foe attribute of the target. In the system without radar identification equipment, the target attributes are determined by vision. Tracking equipment intercepts and tracks targets and continuously measures motion parameters (coordinates, speed, etc.). ) and input them into the computer. Instruct the equipment to process and analyze the aerial information sent by the search equipment for command and decision. The command and control system gives instructions to turn the launcher to the required position and launch the missile. The transmission device turns the missile-equipped launcher to the target according to the instruction. The automatic launcher can automatically launch air defense missiles within a specified time, or it can be manually launched by operators. The guidance system consists of ground guidance equipment and missiles, or all of them are composed of guidance equipment on missiles. Different guidance methods, the composition of guidance system and the configuration of various guidance equipment are very different. The function of the guidance system is to determine the position and motion parameters of the target and the missile, and form the instruction to correct the trajectory according to the flight trajectory determined by the guidance law, so as to guide the missile to fly to the target. The common guidance methods of air defense missiles are remote control guidance (radio command, beam), homing guidance (active, semi-active and passive homing) and compound guidance. The launching system is used for loading, unloading, supporting and launching missiles, and is mainly composed of launching devices and launching control equipment. Air defense missiles are usually launched in the form of variable angle and inclination, and also in the form of vertical launch. Technical support equipment is used to inspect, maintain and install various equipment and devices, ensure the docking assembly, testing, transportation and loading of missiles, and carry out simulation training.