Abstract: Aiming at the problems of long period, low efficiency and poor versatility in radar rotating transmission combination system design, the method of modular design was put forward. The main advantages of the rotating transmission combination system based on modular design were analyzed. According to the radar technical requirements, the function modules of the rotating transmission combination system were designed，and key technologies adopted in the process of the module design were expounded. The performance of rotating transmission combination system was tested. The results indicate that all the properties meet the rotating transmission requirements of radar for multi-media such as power, signal, optical, and liquid.
Key words: radar; rotating transmission; modular design; slip ring