Abstract:SAimingSatStheSlowSpositioningSaccuracySofSwirelessSsensorSnetworkSnodes,SaSweightSparticleSswarmSoptimizationS(WPSO)SisSproposedSinSthisSpaper.SFirstSofSall,SthisSpaperSanalyzesStheSerrorsSbetweenStheSestimatedSandSunknownSnodesSofSanchorSnodesSandStheSrealSdistance,SproposesSstrategiesStoSmodifySdistanceSvalueSofStheSleastSsquaresSandSthenSadoptsStheSWPSOStoSmodifySnodeSlocationSerrors.SSimulationSexperimentsSshowSthatScomparedSwithSbasicSlocationSmethods,SalgorithmSinSthisSpaperShasSimprovedStheSsensorSnodeSlocation,SindicatingSthatSalgorithmSinSthisSpaperSisSvalidStoSsomeSextentSinSconvergence,SnodeSlocationSaccuracySandSenergySconsumption.