?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fwww.eledia.org%2Fstudents-reports%2F445%2F&rft.title=Real-Time+Indoor+Localization+and+Tracking+of+Passive+Targets+by+Means+of+Wireless+Sensor+Networks&rft.creator=Viani%2C+Federico&rft.creator=Martinelli%2C+Mauro&rft.creator=Ioriatti%2C+Luca&rft.creator=Lizzi%2C+Leonardo&rft.creator=Oliveri%2C+Giacomo&rft.creator=Rocca%2C+Paolo&rft.creator=Massa%2C+Andrea&rft.subject=TU+Technical+Reports+and+Publications&rft.description=Recently%2C+the+growing+need+of+monitoring+private+or+public+areas+for+security+purposes+in+civilian+and+military+applications+is+driving+the+research+community+to+design+non-invasive+systems+based+on+tiny+sensing+devices+%5B1%5D.+The+tracking+of+a+vehicle+in+a+restricted+area%2C+the+detection+of+animals+in+a+dynamic+environment%2C+or+the+analysis+of+people+behavior+from+movements+are+few+examples+of+applications+where+the+employment+of+systems+for+the+localization+and+tracking+of+targets+is+mandatory.+In+the+framework+of+wireless+communications+and+technologies%2C+the+development+of+low-power+and+low-cost+devices%2C+such+as+Wireless+Sensor+Networks+(WSN)+%5B2%5D%2C+integrating+on-board+processing+and+radio+interface+has+favored+the+development+of+efficient+cooperative+signal+processing+algorithm+for+tracking+purposes.+Most+of+these+systems+are+based+on+the+processing+of+data+acquired+by+dedicated+sensor%2C+or+they+assume+to+localize+an+active+target%2C+namely+provided+with+some+transmitting+devices+%5B3%5D.+Unfortunately%2C+in+many+applications+the+targets+can+not+be+equipped+with+wireless+modules+and+the+use+of+a+complex+system+based+on+specific+sensors+is+often+not+affordable.+In+this+work%2C+the+localization+problem+is+addressed+by+considering+only+the+information+provided+by+the+quality+indexes+of+the+wireless+links+between+the+nodes+of+the+WSN+as+in+%5B4%5D.+Consequently%2C+unlike+state-of-the-art+approaches%2C+the+infrastructure+needed+by+the+tracking+procedure+is+limited+to+the+nodes+of+the+WSN%2C+without+the+need+of+additional+sensors.+As+a+matter+of+fact%2C+the+target+moving+inside+the+scenario+under+test+interacts+with+the+electromagnetic+signals+transmitted+by+the+wireless+devices%2C+thus+modifying+the+values+of+the+quality+indexes+measured+at+each+node+of+the+network.+By+reformulating+such+a+problem+in+terms+of+a+simplified+electromagnetic+inverse+scattering+problem%2C+the+localization+and+tracking+of+a+passive+target+is+carried+out+by+means+of+a+learning+by+example+(LBE)+strategy+%5B5%5D.+With+respect+to+%5B4%5D%2C+the+novelty+of+this+paper+lies+in+the+application+of+the+proposed+approach+to+realistic+indoor+scenarios+and+in+the+use+of+differential+measurements+in+order+to+remove+the+background+contribution.&rft.date=2011-01&rft.type=Technical+Report&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=http%3A%2F%2Fwww.eledia.org%2Fstudents-reports%2F445%2F1%2FDISI-11-192.C175.pdf&rft.identifier=++Viani%2C+Federico+and+Martinelli%2C+Mauro+and+Ioriatti%2C+Luca+and+Lizzi%2C+Leonardo+and+Oliveri%2C+Giacomo+and+Rocca%2C+Paolo+and+Massa%2C+Andrea++(2011)+Real-Time+Indoor+Localization+and+Tracking+of+Passive+Targets+by+Means+of+Wireless+Sensor+Networks.++%5BTechnical+Report%5D+++++