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星敏感器像平面移位误差的分析与校正(英文).docx

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星敏感器像平面移位误差的分析与校正(英文) Title:AnalysisandCorrectionofStarSensorPlaneDisplacementError Abstract: Starsensorsplayacriticalroleinspacecraftattitudedeterminationandcontrol.However,thesesensorsaresusceptibletovariouserrors,includingtheplanedisplacementerror.Thispaperfocusesonanalyzingandcorrectingtheplanedisplacementerrorinstarsensors,providingacomprehensiveunderstandingofitscauses,impacts,andpotentialcorrectionmethods.Theanalysiscoversboththetheoreticalaspectsandpracticalconsiderationsinvolvedinthecorrectionprocess. 1.Introduction Starsensorsarewidelyusedforcelestialnavigation,whichreliesonprecisemeasurementofthepositionsofstars.Theplanedisplacementerrorisasignificantsourceoferrorinstarsensors'measurements,affectingtheaccuracyofattitudedetermination.Therefore,itisessentialtounderstandthecausesofthiserroranddevelopeffectivecorrectionmethods.Thispaperaimstoprovideadetailedanalysisandcorrectiontechniquesforthestarsensorplanedisplacementerror. 2.CausesofPlaneDisplacementError Theplanedisplacementerrorinstarsensorscanresultfromseveralfactors,includingmechanicalmisalignments,temperaturevariations,non-idealsensorinstallation,andgyrodrift.Eachofthesefactorsisdiscussedindetailtocomprehendtheinfluencetheyhaveonthesensor'splanedisplacementerror.Furthermore,thepaperhighlightstheinterplaybetweenthesefactorsandsuggestsmethodsforreducingtheirimpact. 3.ImpactsofPlaneDisplacementError Theinaccurateestimationofthespacecraft'sattitudecausedbyplanedisplacementerrorcanleadtosignificantnavigationerrors.Thissectionexplorestheimpactsoftheplanedisplacementerroronattitudedeterminationaccuracy,discussingthechallengesitpresentsforspacecraftnavigation. 4.AnalysisofPlaneDisplacementError Thissectiondelvesintothemathematicalmodelingandanalysisoftheplanedisplacementerror.Variousanalyticalmethods,suchasthegeometricapproach,areexploredtounderstandtheerror'sbehavior.Furthermore,statisticalmethodsareemployedtoquantifytheerrorunderdifferentconditionsandscenarios. 5.CorrectionTechniques Tomitigatetheplanedisp