无线传感器网络节点自身定位算法的研究

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1、天津大学硕士学位论文无线传感器网络节点自身定位算法的研究姓名：郭婷婷申请学位级别：硕士专业：计算机应用技术指导教师：孟昭鹏20061201ABSTRACTRapidadvancesinmicro-electronictechnology，embeddedsystemandwirelesscommunicationtechnologyhaveenabledtodeveloplowcostwirelessSensornetwork(WSN)，whereeachsensornodeindividuallysensesthee

2、nvironmentbutcollaborativelyachievescomplexinformationgatheringanddisseminationtasks．Wirelesssensornetworkisapromisingtechniqueformanyapplications，such嬲targettracking，intrusiondetection,wildlifehabitatmonitoringandreal-timetrafficmonitoring．ThelocationofnodesinW

3、SNplaysanimportantroleinthemostapplicationfields．TheinformationthatiscollectedbythesensornodesmakesSenseonlywhenitiscombinedwiththelocationinformationofthesensornodes．Inaddition，knowingtherelativelocationsofS睨ISOI'Sallowsuseoflocation-baSedaddressingandroutingpr

4、otocols．Therefore，positioningtechnology．whichdrawsmoreattentionbecomesoneofthekeytechnologiesinwirelesssensornetworksandhaSbeenwidelystudied．TheresearchofthisthesisisbasedontheanalysisofagreatdealofrecenttechnicalreportsandresearchresultsonWSN．Centroidalgorithm,

5、TDOArangingmethodandtheapplicationofpositioningtechnologyonrobotfootballprogramaredescribed．InCentroidalgorithm，hi曲densityofbeaconnodesisrequiredandtheeffectbeaconnodeshaveontheunknownnodesisnotreflected．Inthispaper,anoveldistributedpositioningalgorithm，referred

6、to硒TDOA·Centroidalgorithm(TCA)，ispresentedandsimulated．DistancebetweentwonodesiscomputedthroughTDOArangingmethod．Theinfluencefactorwhichiscomputedaccordingtothedistancebetweenbeaconnodeandunknownnodeisusedtomeasurethepositionofunknownnode．Moreover,theiterativeap

7、proachisutilizedtoimprovethedensityofanchornodes．Localizednodestransfertobeaconnodesandhelpotherunknownnodes．TheresultsshowthatithasbetterpositioningaccuracythanCentroidalgorithm，especiallywhendensityofbeaconnodesiSlOW．KEYWORDS-Wirelesssensornetworks，Self-Locali

8、zationalgorithm，position独创性声明本人声明所呈交的学位论文是本人在导师指导下进行的研究工作和取得的研究成果，除了文中特别加以标注和致谢之处外，论文中不包含其他人已经发表或撰写过的研究成果，也不包含为获得叁叠盘堂或其他教育机构的学位或证书而使用过的材料。与我一同工作的同志对本研究所做的任何贡献均已在论文中作了