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- W3139972090 abstract "Thispaperpresents amobile sensor deployment algorithm within a hybrid sensornetwork, whichconsists of somemobile sensors anda relatively large numberofstatic sensors. Fora target tracking task, a cluster isconstructed andupdateddynamically fortracking upondetection ofan eventA cluster construetion algorithm inasparsely deployed sensor networkisaddressed. Mobilesensors areusedtofill thecoverage holes inside thecluster. A scalable mobile sensor deployment algorithm basedonstatic sensor cluster ispresented andanalyzed. MinimumSpanning Circle (MSC)ofapolygon acts asthemetric fordynamic clustering. Simulations havebeen usedtoverify theproposed algorithms. I.INTRODUCTION Thispaperaddresses amobile sensor deployment algo- rithmwithin a sparsely deployed hybrid sensor network, pomprised bythestatic andmobilesensors. Duringthe tracking task, mostofthestatic sensors areinsleep modeto savepower. Upondetection ofaninteresting event, sensors that contribute tothetracking task formacluster, determined bythetarget's current andfuture position. Thesensor node that istheclosest totheeventbecomes thecluster headand broadcasts a messagetoconstruct thecluster. Thesensor nodesthatareeither inside thecluster areaornecessary forrouting will join thecluster. Mobile sensors areusedto fill coverage holes inside thecluster soastoimprove the tracking quality. Thewholetracking system isillustrated in Fig.1.Twokeyproblems areaddressed: cluster construction withthesparsely deployed sensor network anddeploying minimumnumberofmobile sensors tofill thecoverage holes. Theintroduction ofhighcapacity mobile sensors high- lights thesensor network's flexibility andfunctionality. As forapre-deployed static sensor network, thecoordination of mobile sensors andstatic sensors cansignificantly enhance thelocal sensing andcommunication capability. Moreover, themobile sensors canmaintain thesensor network andserve asrelay stations ofstatic sensors; whichthusprolong the system's lifetime. A clustering approach isusedtoachieve coordination amongstatic andmobile sensors. Themostsignificant advan- tageofclustering lies inpowersaving because onlysensors contributing tothetracking task areactive andtheothers stay insleep mode.Additionally, mobile sensor deployment can * A * cn<|Ius:e ad o Satic aVi A.mk+R w4ns *Clurhitdc:f" @default.
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- W3139972090 title "Mobile Sensor Deployment fora DynamicCluster-based Target Tracking Sensor Network" @default.
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