Chinese Space Science and Technology ›› 2013, Vol. 33 ›› Issue (6): 33-40.doi: 10.3780/j.issn.1000-758X.2013.06.005

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Vision-BasedRelativeNavigationforRendezvousandDockingofSpacecraft

 LIU  Yong1, XU  Peng1, XU  Shi-Jie2   

  1. (1BeijingInstituteofSpacecraftSystemEngineering,Beijing100094)
    (2BeihangUniversity,Beijing100191)
  • Received:2012-09-11 Revised:2013-07-08 Published:2013-12-25 Online:2013-12-25

Abstract: Forthefinalphaseofspacecraftautonomousrendezvousanddocking,thevisionrelativenavigationmethodbasedontheinformationofthespecificreferencelightsourceswaspresented.Undertheassumptionofsmallattitudeangle,therelativenavigationmodelswerededuced.Theclosed-formsolutionforrelativeattitudeandpositionparametersbasedonthevisionnavigationmodelswasderived.ThereducedorderUnscentedKalmanFiltering(UKF)algorithmwasdesignedtoestimatetheinformationofrelativeattitudeangleandrelativeattitudeanglevelocity.Simulationresultsshowthattheproposedapproachprovidesaconvenientwayforobtainingtheinformationofrelativepositionandrelativeattitude,andthereducedorderUKFcanimprovetheaccuracyoftherelativeattitudedetermination.

Key words: Autonomousrendezvousanddocking, Visionbasedrelativenavigation, Relativeattitudedetermination, Spacecraft