低轨星载粒子探测器布局优化研究
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摘要
基于卫星工具包(STK)、MATLAB软件和国际地磁参考场(IGRF)模型,对粒子探测器在低轨卫星任务中的投掷角测量范围进行了仿真,并给出了其探测器的星上布局优化方法。研究结果表明:粒子探测器的星上布局选择与任务的探测目标相关。如果探测目标是束缚在磁场中作弹跳运动的粒子,应将探测器在朝向卫星轨道坐标系±Y轴的基础上向卫星的前进方向偏转;如果探测目标是处于损失锥中的沉降粒子,应将探测器在朝向卫星轨道坐标系-Y轴的基础上向天顶方向偏转;为实现全投掷角探测范围的探测,要使用多个探测器通过构型布局优化进行联合探测。文章提出的投掷角测量范围分析与优化方法,可推广到多种轨道高度的粒子探测卫星总体设计中,为提升卫星的总体分析设计水平提供支持。
In order to optimize the layout of particle detector onboard LEO satellite,pitch angle detection range is simulated using interactive simulation based on STK,MATLAB and IGRF models,and an optimization method is proposed.The result shows that the layout selection is tightly coupled with the objective of the mission.For mission whose objective is to observe bouncing particles,detector should rotate towards velocity direction based on±Yaxis in VVLH system.For those that focus on the precipitation particles within the losing cone,detector should rotate towards zenith direction.If a complete pitch detection range is required,a multiple detector system should be implemented based on layout optimization.Moreover,the pitch angle detecting range analysis and layout optimization method proposed in this paper can be generalized to other particle detecting missions,and provide basic support in enhancing system design capabilities.
In order to optimize the layout of particle detector onboard LEO satellite,pitch angle detection range is simulated using interactive simulation based on STK,MATLAB and IGRF models,and an optimization method is proposed.The result shows that the layout selection is tightly coupled with the objective of the mission.For mission whose objective is to observe bouncing particles,detector should rotate towards velocity direction based on±Yaxis in VVLH system.For those that focus on the precipitation particles within the losing cone,detector should rotate towards zenith direction.If a complete pitch detection range is required,a multiple detector system should be implemented based on layout optimization.Moreover,the pitch angle detecting range analysis and layout optimization method proposed in this paper can be generalized to other particle detecting missions,and provide basic support in enhancing system design capabilities.
引文
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[2]周平坤.模拟空间辐射生物学效应的研究进展[J].辐射防护通讯,2009,29(5):2-6Zhou Pingkun.Research progress on the modeled spaceradiation biological effects[J].Radiation Protection Bul-letin,2009,29(5):2-6(in Chinese)
[3]王月,王世金,杨晓超,等.低轨道带电粒子探测器探测方向分析[C]//中国空间科学学会空间探测专业委员会第二十次学术会议论文集.北京:中国空间科学学会,2007:388-392Wang Yue,Wang Shijin,Yang Xiaochao,et al.Detectdirection analysis for low orbit charged particle detectors[C]//Proceedings of the 20th Scientific Conference ofSpace Exploration Committee,Chinese Society of SpaceResearch(CSSR).Beijing:Chinese Society of SpaceResearch,2007:388-392(in Chinese)
[4]Sigsbee K,Menietti J D,Santolík O,et al.Polar PWI andCEPPAD observations of chorus emissions and radiationbelt electron acceleration:four case studies[J].Journal ofAtmospheric and Solar-Terrestrial Physics,2008,70(14):1774-1788
[5]徐文耀.地磁学[M].北京:地震出版社,2003:98Xu Wenyao.Geomagnetism[M].Beijing:SeismologicalPress,2003:98(in Chinese)
[6]Langel R A,Sabaka T J,Baldwin R T,et a1.The nearearth magnetic field from magnetospheric and quiet-dayionospheric sources and how it is modeled[J].Physicsof the Earth and Planetary Interiors,1996,98(3/4):235-267
[7]Dendy R O.Plasma dynamics[M].Oxford:OxfordUniversity Press,1990:53
[8]黄朝艳,韩建伟.带电粒子在近地球区运动的计算方法[J].空间科学学报,2007,27(5):367-373Huang Chaoyan,Han Jianwei.Calculating method oncharged particles motion in the near-earth region[J].Chinese Journal of Space Science,2007,27(5):367-373(in Chinese)
[9]肖伏良,周庆华,李君求.地球磁层中粒子投掷角扩散特性[J].长沙理工大学学报(自然科学版),2006,3(3):98-101Xiao Fuliang,Zhou Qinghua,Li Junqiu.The pitch anglescattering of particles in the magnetosphere[J].Journal ofChangsha University of Science and Technology(NaturalScience),2006,3(3):98-101(in Chinese)
[10]徐荣栏,李磊.磁层粒子动力学[M].北京:科学出版社,2005:66Xu Ronglan,Li Lei.Magnetospheric particle dynamics[M].Beijing:Science Press,2005:66(in Chinese)
[11]朱兴鸿,张伟,袁仕耿.基于IRI模型的卫星环境仿真方法研究[J].航天器工程,2013,22(2):40-44Zhu Xinghong,Zhang Wei,Yuan Shigeng.Analysismethod of satellite environment simulation based onIRI model[J].Spacecraft Engineering,2013,22(2):40-44(in Chinese)
[12]张云彬,张永生.STK/Connect模块分析与应用[J].测绘学院学报,2001,18(z1):29-32Zhang Yunbin,Zhang Yongsheng.Modular analysis andapplications of STK/Connect[J].Journal of TopographyInstitute,2001,18(z1):29-32(in Chinese)
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