衛(wèi)星在軌運(yùn)行實(shí)時(shí)視景仿真系統(tǒng)的研究與實(shí)現(xiàn).pdf

1、華中科技大學(xué)碩士學(xué)位論文衛(wèi)星在軌運(yùn)行實(shí)時(shí)視景仿真系統(tǒng)的研究與實(shí)現(xiàn)姓名：代麗紅申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：機(jī)械設(shè)計(jì)及理論指導(dǎo)教師：李世其尹文生20050423IVAbstract“Thevisualsimulationsystemofsatellitemotioninbit”isanintegrationenvironmentofbitdesignbitsimulationvisualizationwhichcombinethetheyofb

2、itsimulationwithcomputergraphicstechnique.Thesystemcangiveuserplentifulvisuallyresultofsimulationconsequentlyhelpthemaccomplishthedesignvalidationargumentationfilterdecisionofflightscheme.Thispaperanalyzessomekeytechnolo

3、giesaboutgeometricmodelingkinematicsmodelingmodeldrivingdisplaying.Basedonthethreedimensionalrealtimedisplaytechnologythevisualsimulationsystemisdevelopedtosimulateattitudebitofsatellites.Firstlysomeoptimumtechnologiesab

4、outgeometricmodelareintroducedAccdingtotheearthmodelweexpatiateonentirespheretexturemappinghalfspheretexturemapping.Therealisticearthismodeledbyusingentirespheretexturemapping.Secondlythispaperdiscussesindetailthebasicla

5、wequationsofthebitdynamicsthendeducesthefmulasfcalculatingthespacecraft’spositionvelocityinseveralmaincodinatesIndertomakeuseoftheexitingprogramaboutbitcalculationofsatelliteswhichiswritteninFtranMixedlanguagesprogrammin

6、g(FtranVC)isrealizedbyusingDLL.Thirdlyaftergeometricmodelingkinematicsmodelingthevirtualsceneisdriven.ThispaperanalysesVCthreadVegathreadinthesimulationdrivers.FVegawindowthreadcan’tbeterminatedpresentsmultiprocessestode

7、velopVegaapplication.BecausesomefunctionscannotberealizedinVegasuchascontraildisplayingChineseactersdisplayingthispaperpresentstheintegrationofVegaOpenGL.Meoveramultiviewpointmultiangleomnidirectionalobservationmethodisp

8、resented.FinallyThispaperdescribesthedesignimplementationofvisualsimulationbasedonsoftwareplatfm－MultiGenCreatVegathevisualsimulationsystemofsatellitemotioninbitisdeveloped.Keywds:ScenesimulationVirtualrealityGeometricmo