应用STL模型的敏感器视场遮挡区域分析方法
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摘要
针对卫星星表产品设备对敏感器视场的遮挡问题,提出了一种应用光固化立体造型术(Stereo Lithographic,STL)的网格化模型的敏感器视场遮挡区域分析方法。此方法首先是将遮挡部件的三维模型转化为STL网格化模型文件,并提取出遮挡部件的STL网格化数据。然后将遮挡部件的STL网格化坐标数据进行处理后,与敏感器视场范围均转换成平面夹角数据。之后,则将遮挡部件的平面夹角数据与敏感器视场范围的平面夹角数据进行对比,分析敏感器视场被部件遮挡的情况,并绘制敏感器视场遮挡图,计算出遮挡率。相比以往方法,此方法有效提高了工作效率,便于工程设计,可作为卫星工作中敏感器视场遮挡分析的有效手段。
For the optical sensor being occluded by the parts on satellite,this paper proposes a method of occlusion analysis of satellite optical sensor using STL(Stereo Lithographic)models.First,three-dimensional model of the part on satellite is transformed into STL grid model files.And the STL grid data of part on satellite are extracted.Then the STL grid coordinator data of part on satellite and the view field of optical sensor are processed into angle data.Then the angle data of part on satellite and the view field of optical sensor are compared.Finally,the occlusion of optical sensor by part on satellite is analyzed.The pictures of the occlusion view field are plotted and the occlusion rate is computed.Compared with previous methods,this method improves the efficiency at work and it is easy to use in engineering design.It is an effective means for the occlusion analysis of the optical sensor view field on satellite.
For the optical sensor being occluded by the parts on satellite,this paper proposes a method of occlusion analysis of satellite optical sensor using STL(Stereo Lithographic)models.First,three-dimensional model of the part on satellite is transformed into STL grid model files.And the STL grid data of part on satellite are extracted.Then the STL grid coordinator data of part on satellite and the view field of optical sensor are processed into angle data.Then the angle data of part on satellite and the view field of optical sensor are compared.Finally,the occlusion of optical sensor by part on satellite is analyzed.The pictures of the occlusion view field are plotted and the occlusion rate is computed.Compared with previous methods,this method improves the efficiency at work and it is easy to use in engineering design.It is an effective means for the occlusion analysis of the optical sensor view field on satellite.
引文
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[2]Delgado F,Quero J,Garcia J,et al.Accurate and wide-field-of-view MEMS-based sun sensor for industrial applications[J].IEEE Transactions on Industrial Electronics,2012,59(12):4871-4880
[3]章仁为.卫星轨道姿态动力学与控制[M].北京:北京航空航天大学出版社,1998Zhang Renwei.Satellite orbit attitude dynamics and control[M].Beijing:Beijing University of Aeronautics and Astronautic Press,1998(in Chinese)
[4]何恒,邓家提,胡凌云.卫星光学敏感器视场遮挡分析工具设计[J].北京航空航天大学学报,2008,34(1):100-103He Heng,Deng Jiati,Hu Lingyun.Design of blinding analysis tool for satellite optical sensors[J].Journal of Beijing University of Aeronautics and Astronautics,2008,34(1):100-103(in Chinese)
[5]黄岸毅,宝音,李俊峰.一种组合体航天器帆板的光照遮挡计算新方法[J].载人航天,2013,19(5):1-15Huang Anyi,Bao Yin,Li Junfeng.A new method for shadow computation of solar panels in spacecraft complex[J].Manned Spaceflight,2013,19(5):1-5(in Chinese)
[6]邵益凯,丁丕满,薛孝补,等.图像检测在航天器太阳帆板遮挡分析中的应用[J].计算机仿真,2016,33(7):116-120Shao Yikai,Ding Piman,Xue Xiaobu,et al.Image detection application in analysis for the shadow of spacecraft solar panel[J].Computer Simulation,2016,33(7):116-120(in Chinese)
[7]董得义,谢川,李彦生,等.基于MFC的STL格式数据文件接口问题研讨[J].现代制造工程,2005,(5):53-55Dong Deyi,Xie Chuan,Li Yansheng,et al.Study and discussion of the datum saved as STL format interface based on MFC[J].Modern Manufacturing Engineering,2005,(5):53-55(in Chinese)
[8]郎兴华,郭阳,林亨,等.STL模型的立体显示及其多屏拼接[J].系统仿真学报,2004,16(4):740-744Lang Xinghua,Guo Yang,Lin Heng,et al.Stereo and multi-screen visualization of STL models[J].Journal of System Simulation,2004,16(4):740-744(in Chinese)