26964.水下導航系統(tǒng)的地磁匹配算法研究

1、山東農(nóng)業(yè)大學碩士學位論文水下導航系統(tǒng)的地磁匹配算法研究姓名：胡曉申請學位級別：碩士專業(yè)：地圖制圖學與地理信息工程指導教師：李希燦20110612水下導航系統(tǒng)的地磁匹配算法研究2AbstractTheexplationfmarinesciencemarinemineralresourcesisexpingintothedepressedareatheresearchdevelopmentonthecrespondingunderwater

2、vehiclerelatedtechnicalismemeimptant.Theproblemofnavigationpositioningisgraduallybecomethebottleneckoftheunderwaterexplationbecauseoftheparticularityoftheunderwaterenvironmentissolvedurgently.Firstlylessinfmationcanbedep

3、endentontheunderwaternavigation.LiketheGPS’ssignalattenuateseriouslyunderwater.SecondINSisthemainnavigationsystemusedinunderwatervehicle.Itserraccumulatesovertimemustrelyonotherinfmationregularlycrected.Solookingfallarou

4、ndnaturalsourceassistednavigationmeanstheimptantguaranteetobecomedeepseaprobesgeomagicfieldonthehavesuchnavigationfeatures.Thispaperreliesonthe863project’s“Researchaboutkeytechniquesprototypesystemofunderwatergeomagismna

5、vigation”ThePostdoctalFund’s“thekeytechnologiesofthegeomagismmatchingoftheunderwaternavigationsystem”toresearch.Firstlythepaperdiscussesthemeaningpurposeontheunderwatergeomagicnavigation.Theprogressathomeabroadofunderwat

6、ergeomagicnavigationtechniqueisreviewedsummarized.Themainmethodsfestablishingthemodelofthegeomagicfielderrsourcesofthemodelofthegeomagicfieldareanalyzed.thescientificvalueissummedupontheresearchofgeomagicmodel.Accdingtot

7、heactualmeasurementdata，geomagicfieldintensitycanbeseenasacteristicvariableofgeomagicmatchingthroughthestudyonthecontrastofsevenacteristics.Thekeyfactssuchasgeomagicdailyvariationgeomagicmonth’svariationwhichhavetheInflu

8、enceonthegeomagicmatchingpositioningareanalyzed.Thestudyshowsthegeomagicdailyvariationcanbeseenasnoise.BasedonthedesignoftheimprovedalgithmofHausdffdistance.GeomagicmatchingnavigationissimulatedbyusingHDalgithm.ComparedC

9、CalgithmwithHDalgithmthroughthreecasesofsamenoiseamplitudedifferentnoiseamplitudesamenumberofmatchingthematchingtimesprecisionsofHDalgithmarehigherthanCCalgithmisproved.HDalgithmsstabilityantijammingabilityarestrongertha