【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。更多还原

【Abstract】 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.更多还原