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1、华中科技大学硕士学位论文浏览器/服务器结构的车辆监控系统的设计与实现姓名：刘峰申请学位级别：硕士专业：计算机系统结构指导教师：文远保;陈晓苏20070202华中科技大学硕士学位论文AbstractVehiclemonitoringsystemisapartofintelligenttransportationsystem.Itsbasicfunctionisreal-timevehiclepositioningandconditionmonitoringofvehicles.Itcostsalottode
2、velopanddeploytraditionalvehiclemonitoringsystemsbasedonC/S(Clint/Server)structurewhichhaspoorscalability.Bythem,userscannotaccesstoinformationquicklyandconvenientlytoo.Therefore,thevehiclemonitoringsystembasedonB/S(Browser/Server)structurehasbecomethemai
3、nstream.WiththeresearchandanalysisofWebGIS(WebGeographicInformationSystem),Ajax(AsynchronousJavaScriptandXML),GISWebServicesandotherkeytechnologies,aB/SmodevehiclemonitoringsystembasedonAjaxandGISWebServicesisdesignedtosolveproblemssuchaspoorsystemsecurit
4、yandcomplexClientdeploymentcausedbyplug-insusuallyinstalledinthebrowser.Thesystem’sprinciple,architectureandmainfunctionsareintroduced.Databaseandmainmodules,suchasreal-timemonitoring,trackintervals,pathplanning,mapmatchingandcoordinateconversion,aredesig
5、nedindetail.Accordingtothesystem’sarchitecture,theworkflowsofbrowserandserverareintroducedrespectively.Ajaxengine,thecorecomponentofbrowser,andtheGISWebServicesintheserverarerealized.Ithasalsobeenanalyzedthathowmapoperatingandvehiclepositioningfunctionsca
6、nberealized.Allinall,thesystemfunctionsareimplementedbythewaythatAjaxengineinvokesGISWebServicesasynchronously.Experimentsshowthatwithunchangednetworkbandwidth,thevehiclemonitoringsystembasedonAjaxandGISWebServicescanreducethecommunicationbetweenserverand
7、browserandcanincreasethespeedofmaploading.ThetechnologicaldifficultiesofmonitoringvehicleonInternet,suchasreal-timepositioning,dynamictracking,trackintervalsandshortestpath,aresolved.Thissystemisvaluableinpractice.Keywords:WebGeographicInformationSystem,B
8、rowser/Server,VehicleMonitoringSystem,WebServices,AsynchronousJavaScript,ExtensibleMarkupLanguageII独创性声明本人声明所呈交的学位论文是我个人在导师指导下进行的研究工作及取得的研究成果。尽我所知，除文中已经标明引用的内容外，本论文不包含任何其他个人或集体已经发表或撰写过的研究成果。对本文的研究做出贡献的个人和集体，均已在文中以明确
