›› 2014, Vol. 34 ›› Issue (3): 15-22.doi: 10.3780/j.issn.1000-758X.2014.03.003

• 研究探讨 • 上一篇    下一篇

复杂航天器的太阳光压建模方法

黄岸毅1,2,张少禹2,李恒年1   

  1. (1宇航动力学国家重点实验室,西安710043)(2西安卫星测控中心,西安710043)
  • 收稿日期:2013-08-30 修回日期:2013-10-21 出版日期:2014-06-25 发布日期:2014-06-25
  • 作者简介:黄岸毅 1988年生,2012年获清华大学航空宇航科学与技术专业硕士学位,助理工程师。研究方向为航天器动力学与控制。

SolarRadiationPressureModelingMethodforComplexSpacecraft

HUANGAnyi1,2,ZHANGShaoyu2,LIHengnian1   

  1. (1StateKeyLaboratoryofAstronauticDynamics,Xi′an710043)(2Xi′anSatelliteControlCenter,Xi′an710043)
  • Received:2013-08-30 Revised:2013-10-21 Online:2014-06-25 Published:2014-06-25

摘要: 针对几何形状比较复杂的航天器光压建模时存在的不同光照特性的材料相互遮挡重叠、传统的简化或经验公式难以满足精度要求的困难,基于精确三维几何模型,利用虚拟视觉原理得到航天器垂直于太阳矢量截面形状,并结合截面各类材料光压系数等特性计算总的等效光压面积和系数。针对该方法计算量较大问题,提出一种根据设定姿态模式事先计算结合实时插值的快速简化算法。考虑到材料特性在空间环境中可能发生的变化,可将其调整为半经验公式,通过观测数据对材料光压系数进行最优估计并应用。仿真实例表明,提出的分析方法可有效反映航天器各部分的相互遮挡,与传统模型相比有一定优势。

关键词: 太阳光压模型, 三维几何模型, 遮挡分析, 半经验公式, 航天器

Abstract: It′scomparativelydifficulttomodelthesolarradiationpressurewhencalculatingthepreciseorbitofthespacecraft.Especiallywhentheshapeofthespacecraftisinvolute,therewouldbesuperpositionandobscurationbetweendifferentmaterials,sothatthenormalexperimentalmethoddoesn′twork.Basedontheprecise3-DGeometricModel,thesimulativevisionwasusedtogetthesectionshapeofthespacecraftwhichperpendiculartotheSunvector,andthencalculatedtheequivalentSRPareaandthecoefficientwiththeSRPcharacteristicsofthematerial.Toreducetheamountofcalculation,anewmethodwasprovidedusingprior-calculatingandreal-time-interpolation.ConsideringthattheSRPcharacteristicswouldchangeinspace,thecalculationwastransformedintoasemi-empiricalformulasothecoefficientscouldbeestimatedbytheobservationdata.Thesimulationindicatesthattheanalysismethodcaneffectivelyreflecttheobscurationbetweenthepartsofthespacecraft.

Key words: Solarradiationpressureforcemodel, 3-Dgeometricmodel, Shadowinganalysis, Semi-empiricalformula, Spacecraft