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时间:2018-05-16
《毕业论文计----基于gps公交站台自动报站系统的研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、毕业论文毕业论文学生姓名学号院(系)专业电子信息科学与技术题目基于GPS公交站台自动报站系统的研究指导教师2010年5月摘要:36毕业论文车载卫星定位系统,又称自动车辆定位系统,对它的研究起始于二十世纪七十年代。最初的应用是为了解决汽车文明带来的日益严重的城市交通问题。时至今日,车载卫星定位系统集合全球卫星定位技术,现代移动通信一技术,地理信息系统技术于一身,不仅在智能交通系统中担负主要作用,同时还可以提供防盗防抢劫报警,紧急医疗求助等多种服务。但是,由于目前车载卫星定位系统的无线传输大多采用GSM
2、短消息通信技术,试验表明通过GSM短消息承载的数据通信业务,实际应用的传输时延不小于6秒,这对于实时性要求较高的需求,难以提供令人满意的应用。因此,采用GPRS技术来替代GSM无线数据传输部分,通过GPRS高达171.2kbps的通信速率,实现低于秒级的实时定位数据传输,成为车载卫星定位系统的发展方向。本文通过对GPS卫星定位理论,卫星数据处理的深入研究,提出一套基于GPRS无线通信技术的车载GPS卫星定位系统的设计方案。关键词:GPS卫星定位,GPRS无线通信。Abstract:GlobalPos
3、itioningSystemofvehicles,alsoknownasautovehicleslocatingsystemisresearchedstartingofin1960s.Theproposeofstudyistofindasolutionfortheheavytraficissuesinbigcitiesthatcausebythecivilizationofautomobiles.Nowadays,autovehicleslocatingiscomposeofGlobalPositi
4、oningSystem,wirelesscommunicationandGlobalgeographicalSystem.Itisnotonlytheessentialpartofintelligenttransportationsystem,butalsoprovidinggrandagainsttheft,grandagainsthighjack,medicalemergenceandsoforth.However,thecommunicationpartofautovehicleslocati
5、ngisbasedonGSM-SMSwhichcannotofferreal-timeapplications.ThebearingofGPSofautomobile'sdevelopmentisusingGPRStechnologythathashighspeedof171.2kbpstochangetheGSMpart.AfterthattheGlobalPositioningSystemofvehicleswilloferreal-timeapplication.KeyWords:Global
6、PositioningSystemofvehicles,GPRScommunicationsystem.36毕业论文目录1绪论················································································32第二章GPS系统的定位原理与基础·······································42.1GPS概述···········································
7、·························42.2GPS组成····································································52.3全球卫星定位的基本原理··············································72.4GPS数据丢失的补偿方案··············································112.5小结····················
8、·····················································153第三章智能公交服务系统车载终端的硬件设计·······················163.1车载终端的概述·························································163.2系统设备的选择和功能················································163.3
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