›› 2012, Vol. 32 ›› Issue (2): 77-83.doi: 10.3780/j.issn.1000-758X.2012.02.012

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CoordinatedManeuverofSpacecraftFormationBasedonLine-of-sightMeasurement 

ZHANG Wei1, FENG Xiao-Hui2, DENG Zhong-Min1   

  1. (1School of Astronautics,BeihangUniversity,Beijing100191)
    (2DongFangHongSatelliteCo.Ltd,Beijing100094) 
  • Received:2011-06-20 Revised:2012-04-25 Online:2012-04-25 Published:2012-04-25

Abstract:  Basedontheline-of-sightmeasurement,acooperativecontrolmethodforleaderlessformationflightispresented.Line-of-sightvectormeasurementisgeneratedwheneachsatelliteinaformationtracksitsneighboringspacecraft.Thefirstmemberoftheformationtracksthedesiredorbitaccordingtothecommandfromahighlevelcontroller.Achainformationisgenerated.Distancesbetweenline-of-sightmeasurementsaretakenasfeedbackoftheformationcontroller.Therelativeperturbationequationsareprovidedtomakesurethatmodelinguncertaintiesandperturbationsareconsideredinthecontrolstrategy.Cyclicformationcontrolisperformedviaslidingmodecontroller.Simulationresultsshowthattheproposedcontrolmethodcanbeusedforsatelliteformationmaintenanceandmaneuver.

Key words: Spacecraft formation, Line-of-sight measurement, Coordinated control, Sliding mode control, Microsatellite