To solve the problems of low fidelity of threat scene， high cost of live fire test and limited scale of participating equipment in the identification process of new anti-aircraft weapon equipment， the simulation system of the anti-aircraft weapon actual equipment confrontation experiment is designed and implemented. By overcoming the technical differences of different types of anti-aircraft weapon radars， the virtual and real targets information can be received by the real radars at the same time. The time synchronization of the internal and external field simulation system over a large area is realized by using the method based on multiple read-write satellite absolute timing+NTP（network time protocol） technology in LAN. The gateway technology is used to realize the interconnection of heterogeneous systems through the simulation system. The practices show that the simulation system runs stably， can be used to carry out the actual equipment confrontation experiment， provides support for testing the combat effectiveness in the system confrontation scenario， and can also provide an important means for commanders to carry out tactical training.