Contrast Source Inversion-Enhanced Synthetic Aperture Approach for Microwave Multilayered Subsurface Imaging

Yamauchi, Yoshihiro; Kidera, Shouhei

doi:10.1109/tap.2023.3298971

Cited by 1 publication

(4 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…offer a reliable estimate for the FDTD (referential data) based Green's function, even though the Hankel function assumes a homogeneous background. The reconstruction accuracy of the CSI for the data equations has also been discussed and validated in the literature [8], [9], aiming for the accuracy of radar imaging. Regarding the state equation, it is notable that using the homogeneousbased Green's function (Hankel function) provides almost the same level of accuracy as using the referential (FDTD-based) Green's function.…”

Section: Results: Complex Permittivity Reconstruction 1) Relevance Of...mentioning

confidence: 99%

“…Given that the Green's functions for stratified background media needed for the post-CI process are seldom provided in an analytical form, they were determined using the following equations as described in [8], [9], [33]:…”

Section: Csi Enhanced CImentioning

confidence: 99%

“…To address this issue, we previously proposed the nonlinear inverse scattering (NIS) enhanced SAR approach [8], [9], where the contrast source inversion (CSI) NIS scheme is introduced to achieve an accurate propagation function, such as Green's function, and suppress clutter response by exploiting the optimal outputs of the CSI. While this scheme successfully enhances the reconstruction accuracy of the SAR image in the stratified media, it still has an substantial issue that the dielectric properties of an object could not be retrieved.…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, the accuracy of the ROI is essential to determine the actual target area. Therefore, we introduced the CSI-enhanced SAR image by the method [8], [9] to enhance the reconstruction accuracy of the CSI reconstruction.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Complex Permittivity Imaging by Incorporating Synthetic Aperture Radar and Inverse Scattering Method for Stratified Ground Medium

Yamauchi,

Kidera

2024

IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing

Self Cite

View full text Add to dashboard Cite

This paper introduces the incorporation approach with synthetic aperture radar (SAR) and contrast source inversion (CSI) based non-linear inverse scattering (NIS) approach for quantitative permittivity imaging for buried object under multi-layered heterogeneous ground media. It is challenging issue to retrieve a complex permittivity from ground penetrating radar (GPR) data, since the NIS problem considerably suffers from inaccuracy due to severe ill-posed condition. To overcome this limitation, this paper introduces the SAR image based region of interest (ROI) limitation in the CSI optimization scheme, where the number of unknowns are massively reduced. Furthermore, the SAR image is also upgraded by the pre-CSI optimization, where the Green's function and background clutter for heterogeneous background (e.g., multi-layered medium) are accurately generated. The FDTD based numerical tests, assuming GPR observation model, show that our proposed scheme effectively reconstructs a dielectric property of buried object, even in severe condition.

show abstract

Section: Results: Complex Permittivity Reconstruction 1) Relevance Of...mentioning

confidence: 99%