3 papers
math.NA2026
Direct sampling methods for inverse medium scattering problems of elastic waves
Lu Zhao, Yiling Li, Zhiyong Cheng
This paper concerns the inverse elastic scattering problem of determining an unknown penetrable obstacle from far-field data. Using the Helmholtz decomposition, the coupled boundar…
math.NA2026
A novel time-domain iterative method for a three-dimensional inverse acoustic obstacle scattering problem
Lu Zhao, Heping Dong, Zhiyong Cheng
This paper concerns the three-dimensional forward and inverse acoustic obstacle scattering problem in the time domain. For the forward problem, a retarded potential formulation dis…
math.NA2026
A highly efficient iterative approach for inverse acoustic obstacle scattering problems in three dimensions
Zhiyong Cheng, Heping Dong, Lu Zhao
This paper concerns a three-dimensional inverse acoustic obstacle scattering problem from scattered field or phased/phaseless far-field data. Based on the boundary integral defined…