?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fwww.eledia.org%2Fstudents-reports%2F728%2F&rft.title=Deterministic+Inversion+of+Wideband+GPR+Data+for+Multi%E2%80%90Resolution+Imaging+of+Buried+Objects&rft.creator=Salucci%2C+M.&rft.creator=Poli%2C+L.&rft.creator=Massa%2C+A.&rft.subject=A+WC+Next+Generation+Wireless+Communications&rft.subject=M+DSCP+Deterministic+Strategies+for+Combinatorial+Problems&rft.description=In+this+work%2C+the+performance+of+an+innovative+conjugate-gradient+(CG)-based+deterministic+microwave+imaging+technique+are+assessed+for+the+inversion+of+wideband+ground+penetrating+radar+(GPR)+data.+The+developed+methodology+exploits+the+intrinsic+frequency+diversity+of+GPR+measurements+through+a+multi-frequency+(MF)+strategy+in+order+to+add+information++to+the+inversion+problem+and+to+mitigate+the+negative+effects+of+ill-posedness+of+the+buried+inverse+scattering+(IS)+problem.+Moreover%2C++the+iterative+multi-scaling+approach+(IMSA)+is+exploited+in+order+to+increase+as+much+as+possible+the+ratio+between+non-redundant+data+and+problem+unknowns%2C+thus+mitigating+the+problem+of+the+non-linearity.+Some+numerical+results+are+shown%2C+in+order+to+analyze+the+achievable+reconstruction+capabilities+by+the+developed+MF+technique+when+dealing+with+the+retrieval+of+objects+having+different+values+of+relative+permittivity.+A+direct+comparison+with+a+frequency+hopping+(FH)-based+implementation+of+the+same+multi-resolution+deterministic+solver+is+shown%2C+as+well%2C+to+highlight+the+differences+between+the+two+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%2F728%2F1%2FDeterministic%2520Inversion%2520of%2520Wideband%2520GPR%2520Data%2520for%2520Multi%25E2%2580%2590Resolution%2520Imaging%2520of%2520Buried%2520Objects.pdf&rft.identifier=++Salucci%2C+M.+and+Poli%2C+L.+and+Massa%2C+A.++(2017)+Deterministic+Inversion+of+Wideband+GPR+Data+for+Multi%E2%80%90Resolution+Imaging+of+Buried+Objects.++Technical+Report.+University+of+Trento.+++++