?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fwww.eledia.org%2Fstudents-reports%2F416%2F&rft.title=A+Computational+Approach+based+on+a+Particle+Swarm+Optimizer+for+Microwave+Imaging+of+Two-Dimensional+Dielectric+Scatterers&rft.creator=Donelli%2C+Massimo&rft.creator=Massa%2C+Andrea&rft.subject=TU+Technical+Reports+and+Publications&rft.description=A+computational+approach+based+on+an+innovative+stochastic+algorithm%2C+namely+the+Particle+Swarm+Optimizer+(PSO)%2C+is+proposed+for+the+solution+of+the+inverse+scattering+problem+arising+in+microwave+imaging+applications.+The+original+inverse+scattering+problem+is+reformulated+in+a+global+nonlinear+optimization+one+by+defining+a+suitable+cost+function%2C+which+is+minimized+through+a+customized+PSO.+In+such+a+framework%2C+the+paper+is+aimed+at+assessing+the+effectiveness+of+the+proposed+approach+in+locating%2C+shaping%2C+and+reconstructing+the+dielectric+parameters+of+unknown+two-dimensional+scatterers.+Such+an+analysis+is+carried+out+by+comparing+the+performance+of+the+PSO-based+approach+with+others+state-of-the-art+methods+(deterministic+as+well+as+stochastic)+in+terms+of+retrieval+accuracy+as+well+as+from+a+computational+point+of+view.+Moreover%2C+an+integrated+strategy+(based+on+the+combination+of+the+PSO+and+the+iterative+multi-scaling+method+(IMM)+is+proposed+and+analyzed+to+fully+exploit+complementary+advantages+of+nonlinear+optimization+techniques+and+multi-resolution+approaches.+Selected+numerical+experiments%2C+concerning+dielectric+scatterers+different+in+shape%2C+dimension%2C+and+dielectric+profile%2C+are+performed+starting+from+synthetic+as+well+as+experimental+inverse+scattering+data.&rft.date=2004-08&rft.type=Technical+Report&rft.type=NonPeerReviewed&rft.format=text&rft.language=en&rft.identifier=http%3A%2F%2Fwww.eledia.org%2Fstudents-reports%2F416%2F1%2FDIT-04-076.pdf&rft.identifier=++Donelli%2C+Massimo+and+Massa%2C+Andrea++(2004)+A+Computational+Approach+based+on+a+Particle+Swarm+Optimizer+for+Microwave+Imaging+of+Two-Dimensional+Dielectric+Scatterers.++%5BTechnical+Report%5D++++(Submitted)++