Abstract: The modeling and dynamic graphic displaying methods used in MMES(A computer simulation software of man,machine and environment system)are introduced.Solid modeling method is used in machine modeling. Surface of human body is represented with Bézier surface. The surface data of human body measured in global coordinates are transferred into local coordinate of each limb. Machines and human body limbs are displayed in given order as graphic objects, and the human-machine interaction process can be dynamically displayed on SGI workstation.

Key words: moving target indicators, human factors engineering, computerized simula2tion