通用导弹雷达罩曲面分片展开系统的开发

根据导弹雷达罩频率选择表面（FSS）的设计要求，研究发展了一种通用的雷达罩曲面的分片、展开算法和相关应用软件系统。算法对任意C²连续曲面，以高斯曲率的绝对值对分片面积的积分与曲面总面积的比值作为曲面是否可展的评定参数，并以此为阈值对不可展开外形雷达罩曲面进行近似分片；使用构造十字基带展开法对分片展开为平面形状。在以上算法基础上，首先使用MFC开发了应用程序框架，并采用OpenGL显示雷达罩曲面的分片操作，最后对分片数据输出AutoCAD格式便于分片贴层材料的切割加工。某型非旋成体导弹头罩的算例表明本文发展的导弹雷达罩曲面分片与展开算法有较高的精度，满足工程设计要求。

Development of a generalized surface partition and projection system for missile radome

To meet the technical requirements of missile radome frequency selective surface (FSS), a partition and projection system of radome surface was proposed and developed. Based on the study of approximate partition and projection of complex surface, the partition coefficient was defined as the ratio of the integration of the absolute value of Gaussian curvature to its area, and the controlling value for surface partition is the summation of partition coefficient of the accumulated surface elements; the surface partitions was projected into 2D shapes by using cross baseband expansion method. On the basis of the above algorithms and data operation, an application framework was developed by using MFC, and the surface data operation was visualized with OpenGL. The surface projection data can be exported into AutoCAD format for subsequent fabrication. A successful application for a missile radome surface demonstrates that, the partition/projection method has high accuracy and satisfies the design requirements.