›› 2017, Vol. 37 ›› Issue (2): 86-92.doi: 10.16708/j.cnki.1000-758X.2017.0056

Previous Articles     Next Articles

Simulationanalysisofplatformvibrationonimagequalityofsatellite-basedhigh-resolutionopticalsystem

 FAN  Bin1,2,*, YU  Qi-Feng1   

  1. 1NationalUniversityofDefenseTechnology,Changsha410073,  China
    2BeijingInstituteofspaceMechanics&Electricity,Beijing100190,China
  • Received:2016-10-25 Revised:2017-02-10 Online:2017-06-25 Published:2017-05-18

Abstract: Duringtheimagingprogressofspacebasedhigh-resolutioncamera,theimagequalitywillbeaffectedbyinstabilityofsatelliteplatform.Aimedtothisproblem,mechanismofimagequalitydegradationduetoimagemotionwasfirstlyanalyzedandthendifferentsimulationmodelsforstaring,linearscanningandtimedelayandintegrationimagingmodeswerebroughtuptosimulateimagescausedbyimagemotion.Thehigh-resolutionremotesensorwasthentakenasthesimulationexampletoanalyzeimagequalityunderdifferentconditions.TheresultsshowthatmoreimagedegradationisbroughtbyvibrationforTDIimagingmodeandimagequalityismoresensitivetoplatformvibrationwithhigherresolution.Atlast,therelationbetweenspatialresolutionandplatformvibrationparameterswasbuiltandtolerancesofvibrationamplitudeweregivenaccordingtodegradationmodelandimagequalityevaluation,whichcanprovidereferencesforparametersofstabilizationdevices.

Key words: platformvibration, opticalimaging, highresolution, simulationmodel, imagequality