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1、【摘要】定位通常是指确定地球表面某个物体在某一参考坐标系中的位置,无线定位作为定位的一个重要类型,最初也是应用于导航定位系统中。根据接收到的无线电导航台发射信号的强度、相位、时间、频率等参数的变化,用户通过一定的算法计算出自己的位置。当前,无线通信技术飞速发展,在新技术和市场需求的共同作用下,未来无线通信技术的传输熟虑更高,同时更具有安全性、智能性和灵活性,以及更好的传输质量和服务质量。多种多样的无线网络业务也越来越引起人们的关注,无线网络已从原来的互连设备转变成一种多业务承载平台,这其中,获取用户位置则成为实
2、现各项增值业务的关键,各种基于位置信息的移动业务层出不穷。本文在介绍了现有无线传感器网络定位技术的基础上,介绍了无线射频技术RFID在定位技术领域中的应用,讨论了根据检测信号强度损耗模型基于距离与不基于距离的两大类算法。列举了定位的主要应用领域。论文着重对基于室内接受信号强度的定位技术进行了探讨。关键词:无线传感器网络;定位技术;射频识别技术;基于距离;不基于距离【Abstract】Positioningisusuallyreferstodeterminethesurfaceoftheearth,anobjec
3、tinareferencecoordinatesystem,thepositionofthewirelesslocationasanimportanttypeoflocation,firstisalsousedinnavigationandpositioningsystem.Accordingtoreceiveradiobeaconsignalstrength,phase,time,frequency,andthechangeoftheparameters,theuserthroughcertainalgori
4、thmisoutofhisposition.Atpresent,wirelesscommunicationtechnology,rapiddevelopmentinnewtechnologyandthemarketdemandunderthecommonfunctionof,thefutureofwirelesscommunicationtechnologytransfer,andatthesametimeismoredeliberatehighersecurity,intelligenceandflexibi
5、lity,andbetterqualityandservicequalityofthetransmission.DuoZhongvarietyofwirelessnetworkmorebusinesscausetheattentionofpeople,wirelessnetworkhasfromtheoriginalinterconnectionequipmentintoabusinessplatform,amongthem,thebearingisapositionforusersrealizeallkind
6、sofvalue-addedbusinesskey,allkindsoflocationbasedmobilebusinessinformationemergeinendlessly.Thispaperintroducesexistinginwirelesssensornetworkpositioningtechnology,onthebasisoftheintroductiontothewirelessrftechnologyinthefieldofRFIDpositioningtechnology,andd
7、iscussedtheapplicationaccordingtothetestsignalstrengthlossmodelbasedondistanceandnotbasedonthedistanceofthetwocategoriesalgorithm.Liststhepositioningofthemainapplicationfields.Thispapermainlybasedonindooracceptsignalstrengthtothelocationofthetechnologyweredi
8、scussed.KeyWords:Wirelesssensornetwork;Locationtechnology;RadioFrequencyIdentification;rangebased;rangefree目录绪论-1-1.1室内GPS定位技术-1-1.2室内无线定位技术-3-2射频识别技术(RFID)-8-2.1射频识别技术(RFID)及其特点-8-2.2RFID的组成-9-