| 基于面元网格化的空间目标光学特性计算方法 |
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| 引用本文： | 鲍文卓,丛明煜,张伟,程军,曹移明.基于面元网格化的空间目标光学特性计算方法[J].哈尔滨工业大学学报,2010,42(5):710-715. |
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| 作者姓名： | 鲍文卓 丛明煜 张伟 程军 曹移明 |
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| 作者单位： | 哈尔滨工业大学空间光学工程研究中心;哈尔滨工业大学空间光学工程研究中心;哈尔滨工业大学空间光学工程研究中心;哈尔滨工业大学空间光学工程研究中心;哈尔滨工业大学空间光学工程研究中心 |
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| 基金项目： | 国家高技术发展研究计划资助项目(2006AA704215) |
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| 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.
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| 关 键 词： | 空间目标 光学特性计算 几何体建模 面元网格化 |
An optical characteristics calculating method based on surface mesh-creation for space targets |
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| BAO Wen-zhuo,CONG Ming-yu,ZHANG Wei,CHENG Jun and CAO Yi-ming.An optical characteristics calculating method based on surface mesh-creation for space targets[J].Journal of Harbin Institute of Technology,2010,42(5):710-715. |
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| Authors: | BAO Wen-zhuo CONG Ming-yu ZHANG Wei CHENG Jun and CAO Yi-ming |
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| Affiliation: | Research Center for Space Optical Engineering,Harbin Institute of Technology,Harbin 150001,China;Research Center for Space Optical Engineering,Harbin Institute of Technology,Harbin 150001,China;Research Center for Space Optical Engineering,Harbin Institute of Technology,Harbin 150001,China;Research Center for Space Optical Engineering,Harbin Institute of Technology,Harbin 150001,China;Research Center for Space Optical Engineering,Harbin Institute of Technology,Harbin 150001,China |
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| Abstract: | 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. |
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| Keywords: | space target optical characteristics calculation target geometry modeling surface mesh-creation |
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