组合体太阳帆板遮挡分析

Obscuration Analysis of Combined Spacecraft Solar Panel

太阳帆板的遮挡分析是航天器电源分系统方案设计的基础。基于几何学方法,建立了组合体太阳帆板遮挡数学模型,考虑了组合体本体对帆板以及帆板之间的遮挡。首先通过几何的方法得到本体和帆板在被遮挡帆板平面的投影,然后将被遮挡帆板离散成小矩形,最后通过判断该矩形是否位于投影中来获得太阳帆板的遮挡面积和遮挡区域。仿真结果表明,该方法能够有效地进行任何圆柱体形航天器的太阳帆板遮挡分析。

Solar panel obscuration analysis is the foundation of spacecraft＇s power sub-system during the scheme design phase. The mathematic model for combined spacecraft＇s solar panel obscuration was proposed based on geometry method, combined spacecraft self-body and solar panel as obscuring objects were taken into account. Firstly, the projections of spacecraft self-body and solar panel in the obscured solar panel plane were obtained using geometry methods, then the obscured solar panel was divided into small rectangles, finally, the obscuration area and zone of solar panel were achieved by judge whether the small rectangles located in the projections. The simulation results illustrate that the method presented can analyze effectively the obscuration of any cylinder-shaped spacecraft.