车辆导航系统中地图匹配的研究

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1、北京交通大学硕士学位论文车辆导航系统中地图匹配的研究姓名：李沛申请学位级别：硕士专业：通信与信息系统指导教师：李兴华20080501ABSTRACTABSTRACT：AstherapiddevelopmentofChinesetransportsystem，newroadsandothertransportfacilitiesareincreasing．Asadirectionofthetransportsystemdevelopment，vehiclenavigationsystemisimportantforimprovingthetrafficsituation．Theaccur

2、acyofthepositioningsystemiscrucial．Accurateroutesandthevehiclelocationdisplayedonthemapcouldbeprovidedfordriverscorrectlyonlyifthevehiclelocationisknownaccurately．Howtoprovidedriverswithreal-time，accuratelocationofvehicleshasbecomethefocusofvehiclenavigationsystems．Asapositioningtechnology,mapma

3、tchingisbasedonthehigh-precisionroadinformationofanelectronicmap．ItcomparesthedataofvehiclelocationortrackreceivedbytheGPSreceiverandthedataofroadinformationinanelectronicmap，andfindstheroadvehiclesaredrivenonanddisplaythevehiclelocation．Thepaperisconcentratedonmapmatchinginvehiclenavigationsyst

4、em．First，onthebasisofunderstandingthevehiclenavigationanditsmodules，theconceptsandbasicprinciplesofmapmatchingarediscussedindetail．Afterdeepanalysisoffactorsofthereal-time，therobustandtheaccuracyofmapmatching，thecommonalgorithmsarestudied，andtheadvantagesanddisadvantagesofthemaresummedup．Theseal

5、gorithmsincludetheprojection,probabilityandstatisticsalgorithm，thecorrelationalgorithm，thealgorithmbasedonthenetworktopologyandthealgorithmbasedonthecurvefitting．ThenthealgorithmofmapmatchingbasedD—Sevidencereasoningisintroduced．Inthispaper,thatalgorithmisusedtocompletethreecoursesofmapmatching，

6、thatis，determiningtheregionaloferror,choosingthematchingsectionandamendingtheresultsoforientation．Asforthesingledecision-makingstandardintheD—Sevidencereasoning,thedecision-makingofPignisticprobabilityisintroducedtoimprovetheaccuracyofroadchoosing．Atthesametime,thespacetopologicalofroadsisintrod

7、ucedtospeeduptheroadsearchingandimprovetheaccuracyofroadchoosing．Differentmethodsaredesignedtocompletethematchingoftheturningsections，theparallelsections，thecrossroadsectionsandtheoverpasssections．Differentapproachesareusedf