在轨卫星星等建模与计算

发布时间：2018-06-06 14:48

本文选题：卫星 + 星等　；参考：《应用光学》2014年03期

【摘要】：星等的大小代表了星体对于人眼的可观测程度。卫星星等的理论计算对于观测跟踪卫星光学系统设计等具有重要的指导意义。结合天文学、轨道动力学、辐射度学、光度学和计算数学理论,建立了计算人造卫星星等的物理数学模型。计算了卫星的可见光反射能量随轨道运行的瞬时特征,结合人眼的视觉特性,推导出了轨道卫星星等的计算方法,并进一步针对卫星表面为灰体的情况给出了一种计算卫星星等的方法及星下点卫星星等的周期性计算曲线,结果表明:星下点观测的卫星星等随卫星在轨道上位置的变化非常显著,对同一卫星,不同星下点观测到的星等差异仅在日照区就可达5个等级之多。
[Abstract]:The magnitude of the magnitude represents the observability of the star to the human eye. The theoretical calculation of satellite magnitude is of great significance for the design of optical system for observation and tracking satellite. Based on the theories of astronomy, orbital dynamics, radiance, photometry and computational mathematics, a physical mathematical model for calculating satellite magnitude is established. The instantaneous characteristics of the visible light reflection energy of the satellite with the orbit are calculated, and the calculation method of the star magnitude of the orbiting satellite is deduced in combination with the visual characteristics of the human eye. Furthermore, a method of calculating satellite magnitude and the periodic calculation curve of satellite magnitude at the point below the satellite are given for the case that the satellite surface is gray. The results show that the magnitude of the satellite observed at the sub-satellite points varies significantly with the position of the satellite in orbit. For the same satellite, the difference of the magnitude observed at different points under the satellite can be as many as five grades in the sunshine region alone.
【作者单位】：电子工程学院脉冲功率激光技术国家重点实验室;电子工程学院红外与低温等离子体安徽省重点实验室;
【基金】：电子工程学院科研基金资助项目(KY10042)
【分类号】：P171

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