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Infrared guidance has the advantages of passive imaging concealment and high precision, but the infrared guidance is easily interfered by laser. In addition, infrared guidance can not carry information such as distance, while laser guidance just makes up for this shortcoming, so the laser infrared composite guidance technology and mutual interference technology is the focus of research at home and abroad. Different experiments in different environments are required in the study of correlation guidance and interference technology. If a variety of experiments are carried out in the field, it will cost a lot of money and consume a lot of manpower, material and time. Therefore, a multi-function simulation system can be designed to carry out a variety of simulation experiments in different environments. The simulation system applies simulation theory, simulation technology, PID control, image processing, motion control and other technologies and control methods. Simulation system of infrared heat source temperature control error is plus or minus 0.5 ℃, rotary table can rotate within ±10° or ±20° and it's angular resolution is better than that of 20 ", the image size of collecting is 253 x 318 and continuous acquisition rate is 50fps/s . The simulation system can simulate the infrared guidance, laser guidance, laser interference infrared guidance and other kinds of guidance and mutual interference technology.