LEE, JM KIM, SY RA, JW 2024-01-21T23:04:19Z 2024-01-21T23:04:19Z 2021-09-02 1992-12 0950-107X https://pubs.kist.re.kr/handle/201004/146351 A further study is made of the reconstruction of permittivity profile by using the spectral inverse scattering scheme with the moment-method procedures. Based on earlier works, the reconstructed profiles have been affected by large errors even with a negligible random noise of the measured field. One of the intuitive approaches to reduce these errors has been implemented successfully by employing a polynomial basis function to the induced field on each enlarged cell in conjunction with a suitable weighting function. Another method is presented which adopts a low-pass filter to the spatial-Fourier transform of the equivalent source distribution induced in a dielectric object. The accuracy and validity of the spectral filtering are assured by a number of numerical simulations for a simple test geometry. English IEE-INST ELEC ENG FILTERING EFFECTS ON PERMITTIVITY PROFILES RECONSTRUCTED BY A SPECTRAL INVERSE SCATTERING TECHNIQUE Article 10.1049/ip-h-2.1992.0091 1 IEE PROCEEDINGS-H MICROWAVES ANTENNAS AND PROPAGATION, v.139, no.6, pp.507 - 512 IEE PROCEEDINGS-H MICROWAVES ANTENNAS AND PROPAGATION 139 6 507 512 N scie scopus A1992KD33700006 Optics Optics Article MULTIPLE SOURCE MOMENT METHOD INVERSE SCATTERING NUMERICAL ANALYSIS DIELECTRICS ELECTROMAGNETIC SCATTERING RECONSTRUCTION MICROWAVE IMAGING