Multi-frequency subspace migration for imaging of perfectly conducting, arc-like cracks in full-and limited-view inverse scattering problems

WK Park - Journal of Computational Physics, 2015 - Elsevier
Multi-frequency subspace migration imaging techniques are usually adopted for the non-
iterative imaging of unknown electromagnetic targets, such as cracks in concrete walls or …

Application of MUSIC algorithm in real-world microwave imaging of unknown anomalies from scattering matrix

WK Park - Mechanical Systems and Signal Processing, 2021 - Elsevier
In this contribution, we consider MUltiple SIgnal Classification (MUSIC)-type algorithm for a
non-iterative microwave imaging of small and arbitrary shaped extended anomalies located …

On the application of orthogonality sampling method for object detection in microwave imaging

WK Park - IEEE Transactions on Antennas and Propagation, 2022 - ieeexplore.ieee.org
We consider a further development of the orthogonality sampling method (OSM) for a fast
localization of small object in microwave imaging (MI). In contrast to the scenarios …

[HTML][HTML] High resolution ultrasonic imaging of extended targets via combined match field and time delay beamforming

C Huang, FL di Scalea - Ultrasonics, 2025 - Elsevier
Ultrasound imaging using an active sensing array has been extensively studied in both time
domain and frequency domain. Subspace decomposition methods in match field …

Single-and multi-frequency direct sampling methods in a limited-aperture inverse scattering problem

S Kang, M Lambert, CY Ahn, T Ha, WK Park - IEEE Access, 2020 - ieeexplore.ieee.org
Although the direct sampling method (DSM) has demonstrated its feasibility and robustness
for imaging of small inhomogeneities, mathematical analyses of DSM have been conducted …

MUSIC algorithm for location searching of dielectric anomalies from S-parameters using microwave imaging

WK Park, HP Kim, KJ Lee, SH Son - Journal of Computational Physics, 2017 - Elsevier
Motivated by the biomedical engineering used in early-stage breast cancer detection, we
investigated the use of MUltiple SIgnal Classification (MUSIC) algorithm for location …

Asymptotic properties of MUSIC-type imaging in two-dimensional inverse scattering from thin electromagnetic inclusions

WK Park - SIAM Journal on Applied Mathematics, 2015 - SIAM
The main purpose of this paper is to study the structure of the well-known noniterative
MUltiple SIgnal Classification (MUSIC) algorithm for identifying the shape of extended …

Direct sampling method for imaging small dielectric inhomogeneities: analysis and improvement

S Kang, M Lambert, WK Park - Inverse Problems, 2018 - iopscience.iop.org
The direct sampling method (DSM) has been introduced for non-iterative imaging of small
inhomogeneities and is known to be fast, robust, and effective for inverse scattering …

[HTML][HTML] Multi-frequency topological derivative for approximate shape acquisition of curve-like thin electromagnetic inhomogeneities

WK Park - Journal of Mathematical Analysis and Applications, 2013 - Elsevier
In this paper, we investigate a non-iterative imaging algorithm based on the topological
derivative in order to retrieve the shape of penetrable electromagnetic inclusions when their …

Topological derivative strategy for one-step iteration imaging of arbitrary shaped thin, curve-like electromagnetic inclusions

WK Park - Journal of Computational Physics, 2012 - Elsevier
In this manuscript, a fast imaging of thin, curve-like electromagnetic inclusions completely
hidden in the homogeneous domain with smooth boundaries is considered. By creating an …