Visual emulation Technology is one of the important parts of VR systems. It takes charge of Vision issue in VR systems, and is the most important fact to affect the immersive of the system. To deal with the difficulties of one type artillery radar, such as limited training field, serious radar loss and expensive training outlay, a training simulator system is realized based on scene simulation technologies. Composition structure, function module and key technologies of the system are discussed first. This system is then developed with tools of Multigen-Creator, Vega, VC++6.0, and a living virtual battlefield environment is created. The emulation pictures are listed, the results show that the emulation system simulates operation process of artillery radar livingly and can meet the requirements of real time emulation.