摘要
为实现复杂结构空间目标光学特性的工程化计算,基于计算几何的面元网格化思想,提出了一种空间目标光学特性计算方法.建立了空间目标标准几何结构、面元网格划分、面元遮挡、面元照度计算的数学模型,设计开发了空间目标光学特性计算软件.针对不同的卫星目标,进行了光学特性的计算,并将计算结果分别与解析法计算结果和试验测量结果进行比较分析,结果表明面元网格化的计算精度优于解析方法,且与试验结果相比其计算偏差小于一个视星等,满足工程应用的要求.
In order to realize the optical characteristics calculation of space targets with complex shape,an optical characteristics calculating method for space targets was presented based on the general idea of surface mesh-creation.The mathematical models of standard geometries for targets,mesh-creation methods,visibility of the target,and the luminance calculation were given.The software calculating optical characteristics of space targets was designed and compiled.For several satellite targets,optical characteristics calculations were conducted with this method,and the results were compared with those of analytic method and experiments.It is showed that the mesh-creation method is better than the analytic method in precision,and the errors are less than one apparent magnitude compared with experimental results,so this method can be applied in practice.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2010年第5期710-715,共6页
Journal of Harbin Institute of Technology
基金
国家高技术发展研究计划资助项目(2006AA704215)
关键词
空间目标
光学特性计算
几何体建模
面元网格化
space target
optical characteristics calculation
target geometry modeling
surface mesh-creation
