›› 2016, Vol. 36 ›› Issue (2): 66-.doi: 10.16708/j.cnki.1000-758X.2016.0025

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Aninstallationdesignofimprovingpointingaccuracyofstarsensorbasedonsemirigidconnection

ZHU  Hua, ZHANG  Chun-Yu, ZHOU  Xu-Bin, ZHANG  Zong-Hua, GU  Zhi-Yue, LYU Kai   

  1. ShanghaiInstituteofSatelliteEngineering,Shanghai201109,China
  • Received:2015-12-01 Revised:2016-01-05 Online:2016-04-25 Published:2016-02-24

Abstract: Satelliteperformanceinorbitisimpactedbypointingaccuracyofstarsensorandsyntheticapertureradar(SAR)middleplatebecauseofthermaldeformation.CharacteristicsaboutthermaldeformationofstarsensorandSARwerestudiedandanalysed,andinstallationbetweenSARandsatellitebodywasdesigned.Takingonesatelliteasanexample,SARandsatellitebodywereconnectedwithasemirigid(horizontalconstraintreleased)method,andtheinfluenceofsatellitethermaldeformationwasisolatedtoSARwithacertainrigidity.Asaresult,pointingaccuracyofstarsensorrelativeSARmiddleplateincreased,andmettherequirementofsatelliteimaging.Thisisverifiedbycalculationanalysisandtest,andcanprovidereferenceforotheraerospaceelectroncequipments.

Key words: starsensor, pointingaccuracy, semirigidconnection, calculationandanalysis, thermaldeformationtest