?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fwww.eledia.org%2Fstudents-reports%2F732%2F&rft.title=Multi-Frequency+Multi-Resolution+Stochastic+Optimization+for+GPR+Microwave+Imaging&rft.creator=Salucci%2C+M.&rft.creator=Poli%2C+L.&rft.creator=Anselmi%2C+N.&rft.creator=Massa%2C+A.&rft.subject=A+WC+Next+Generation+Wireless+Communications&rft.subject=M+EA+Evolutionary+Algorithms&rft.description=In+this+work%2C+the+retrieval+of+the+dielectric+characteristics+of+unknown+objects+buried+in+a+lossy+half-space+is+dealt+with.+An+innovative+multi-resolution+multi-frequency+(MF)+stochastic+microwave+imaging+technique+is+proposed+to+solve+the+buried+inverse+scattering+problem+by+processing+wide-band+ground+penetrating+radar+(GPR)+data.+The+proposed+MF-IMSA-PSO+method+exploits+a+particle+swarm+optimization+(PSO)-based+algorithm+to+find+the+global+optimum+of+the+MF+cost+function+measuring+the+mismatch+between+available+and+retrieved+data+at+a+fixed+set+of+frequencies.+Such+a+stochastic+solver+is+nested+within+the+iterative+multi-scaling+approach+(IMSA)++in+order+to+reduce+the+ratio+between+problem+unknowns+and+informative+data%2C+as+well+as+to+adaptively+enforce+increasing+resolutions+only+within+the+regions+of+interest+in+which+the+scatterers+have+been+detected.+A+preliminary+numerical+validation+is+shown%2C+in+order+to+assess+the+robustness+of+the+developed+approach+with+respect+to+noise%2C+as+well+as+to+compare+its+performance+to+state-of-the-art+competitive+approaches.&rft.publisher=University+of+Trento&rft.date=2017&rft.type=Monograph&rft.type=NonPeerReviewed&rft.format=text&rft.language=en&rft.identifier=http%3A%2F%2Fwww.eledia.org%2Fstudents-reports%2F732%2F1%2FMulti%25E2%2580%2590Frequency%2520Multi%25E2%2580%2590Resolution%2520Stochastic%2520Optimization%2520for%2520GPR%2520Microwave%2520Imaging.pdf&rft.identifier=++Salucci%2C+M.+and+Poli%2C+L.+and+Anselmi%2C+N.+and+Massa%2C+A.++(2017)+Multi-Frequency+Multi-Resolution+Stochastic+Optimization+for+GPR+Microwave+Imaging.++Technical+Report.+University+of+Trento.+++++