本科毕业设计论文PAGE\*MERGEFORMATIV摘要无线传感器网络（WSN，WirelessSensorNetwork）是近年来迅速发展并受到普遍重视的新型网络技术，它的出现和发展给人类的生活和生产的各个领域带来了深远的影响。无线传感器网络节点定位技术是无线传感器网络应用研究的基础。目前，已有多种定位技术被应用于室内定位中，尤其是基于接收信号强度（RSSI，ReceivedSignalStrengthIndication）的定位技术以其低功耗、低成本、易于实现等优点，得到了无线传感器网络研究学者们的青睐。本文重点研究了基于RSSI的室内定位的关键技术，主要包括定位模型分析和定位算法设计。首先，为了获得较为精确的定位，根据RSSI测距原理和无线信号传播衰减模型在设定的室内环境进行多次实验，通过计算及均值处理等方法反复调整以获得标准的定位模型参数，得到高精度的等效距离。接着，根据三边定位算法原理简化定位算法，建立更为简单的定位模型，采用双边定位得到两个可能的定位点，再利用RSSI测距原理对两个定位点进行择优选择确定定位点。最后，在Arduino开发平台上对参考节点与未知节点这两类iDuino节点的室内定位模型进行了软件开发设计和程序开发。在设定的室内环境部署iDuino节点，搭建实验定位模型，并实现了定位。关键词：无线传感器网络，节点，室内定位，RSSI，ArduinoABSTRACTWirelesssensornetwork(WSN)isdevelopedrapidlyanduniversallyemphasizedasanewnetworktechnologyinrecentyears,theadventanddevelopmentofWSNhavehadaprofoundandlastingimpactonthelifeandallareasofproductionofhumanbeings.Wirelessnodeslocalizationtechnologyisthebasisintheapplicationandstudiesofwirelesssensornetwork.Thereareavarietyofpositioningtechnologyhavebeenusedinindoorlocationatpresent,especiallythebasedonRSSI(receivedsignalstrength)positioningtechnologygetsagreatpreferencefrommanyscholarsofstudiesofwirelesssensornetworkwiththeadvantagesoflowpowerconsumption,lowcostandeasytorealize.ThispapermainlystudiesthekeytechnologyofindoorpositioningbasedonRSSI,whichmainlyincludesthepositioningmodelanalysisandpositioningalgorithmdesign.First,inordertoobtainmoreaccuratepositioning,weperformseveralexperimentsaccordingtotheRSSIrangingprincipleandwirelesssignalpropagationattenuationmodelinthesettingofindoorenvironment,andgetaccuratepositioningmodelparametersandequivalentdistancebythemethodsofcalculationandmeanprocessing.Then,wesimplifyTrilateralLocalizationAlgorithmtoBilateralLocationAlgorithmandestablishasimplerpositioningmodel,withwhichwecangettwonodesofpossiblelocation,anddeterminethebetternodeaccordingtotheRSSIrangingprinciple.Atlast,wemakesoftwaredesigningandprogrammingofthesenodesthatareanchornodesandnodesofunknownontheArduinodevelopmentplatform.Combinedwi