自主光学导航非线性滤波算法研究

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1、IIRESEARCHOFAUTONOMOUSOPTICALNAVIGAnONNoNLINEARFILTER附GALGORITHMABSTRACTInthenewcentury,hottopicsindeepspaceexplorationarerising，whicharerepresentedbyexplorationmissionsofbigandsmallcelestialbodies．Thenewhightideoftechnologyresearchandplanexecutionford

2、eepspaceexplorationhavearrived．Thecommunicationdelayinducedbythelargedistanceofdeepspaceexplorationisalongtime．ThecommunicationofspacecraftandtelemeterandcommandstationonthegroundCannotsatisfywiththeneedofdeepspacemissionnow．Sodeepspaceexplorationauton

3、omousnavigationtechnologywillreplaceitandwillbecomearegardedkeytechnologyinthedeepexplorationfields．WiththesupportsofTenthFive·Year863Program(AutonomousNavigationTechnologyofDeepSpacecraft)，thisdissertationanalysesthebackgroundanddomesticandforei朗situa

4、tionofdeepspaceexplorationopticalautonomousnavigation．Andthedissertationalsostudiesthenonlinearfilteringalgorithmsapplicationinautonomousopticalnavigationtechnology．Themaincontentsofthisdissertationareasfollows：First，basedontheanalysisofmassivecorrelat

5、ivevaluablereference，thisdissertationintroducesthesignificance、backgroundanddomesticandforeignsituation．Combinedwiththetaskflowofdeepspaceandautonomousopticalnavigation，thisdissertationbrieflyanalysestheprincipleofopticalnavigation．Tothedifferentstageo

6、fdeepspaceexploration，itintroducestherelativeorbitdynamicsequations．Anddifferentautonomousopticalnavigationmethodsareproposedtoo．Atthesametime，observationequationsofdeepspaceexplorationareintroduced．Sothewell-groundedbaseisestablishedforthenextresearch

7、workofautonomousopticalnavigationnonlinearfilteringalgorithm．Second，real—timeperformanceiSconsideredtobeamainfactorindeepspaceexplorationfields．Butlargeamountofdataaremorecomplexandtime—consuming．Atthesametime，on—boardcomputer’Sdataprocessingislimited．

8、Todealwiththeseproblems，cylindricalcoordinatesystemisusedinheliocentriceclipticcoordinatesysteminthisdissertation．AndTSS—EKFalgorithmisappliedinopticalautonomousnavigationtoo．Theyreducethecouplingbetweenthestatevariablesandtheobservatio