3维军标符号的动态建模是虚拟战场的重要内容，其对提高战场态势的直观性，增强辅助决策能力具有重要意义。提出了一种基于网格控制的3维军标符号动态建模与优化方法，首先对军标符号在2维平面上进行剖分，形成逼近线段；通过贝塞尔网格和DEM网格的约束，使逼近线段在3维空间中发生变形，控制其空间形态；依据空间线段剖分点与相邻点连线的角度，对剖分与变形后的空间点集进行优化；最后进行Delaunay三角网重构，从而得到3维空间中优化的动态模型。实验结果表明，该方法能够很好地控制3维军标符号的平面与空间形态，并能有效实现DEM地形跟随。

It is one of the most important parts of the research on virtual battlefield for 3D military symbol modeling. A dynamic modeling method based on the control grid was declared, Bezier grid and DEM grid are used to control the military symbol models 3D shape. The military symbol is divided into several line segments according to its slope. Then, a Bezier grid is drawn around the symbol, when the Bezier grid is warped. The symbol will be projected into the grid, as well as the line segments are transformed into 3D space and are optimized by the angle of two line segments. With surface reconstruction from Delaunay triangulation, a 3D military symbol will be created. The DEM grid is used to control the 3D military symbol models shape also; the 3D military symbol can be limited into the DEM grid and follow the DEM grids surface.