Jianxin Cao

Dr. Jianxin Cao


Research Focus & Metrics

Academic Career Length

1Year (2026-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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8 September 2026 in Applied Sciences
Verified
Journal Article
Open access
PDF file
PZPeng Zhang
Peng Zhang
FLFeng Liu
Feng Liu
JCJianxin Cao
Jianxin Cao
XBXingzhi Ba
Xingzhi Ba
NDNing Ding
Ning Ding
BCBingchuan Cheng
Bingchuan Cheng
Numerical dispersion limits the accuracy of finite-difference elastic-wave modeling, particularly when relatively short spatial stencils are used. This study evaluates staggered-grid spatial-derivative coefficients obtained using a constrained simulated-annealing procedure and compares their spectral and numerical behavior primarily with Taylor-expansion coefficients within the same numerical framework. The coefficient design minimizes the maximum absolute spectral approximation error over a prescribed normalized-wavenumber interval while enforcing first-derivative consistency and an alternating, decreasing-magnitude coefficient pattern. The homogeneous and modified Marmousi examples indicate reduced visible dispersion relative to Taylor coefficients at the same stencil half-length. Least-squares coefficients are retained only as an additional qualitative reference in the homogeneous-model tests. The conclusions are limited to the tested two-dimensional isotropic models, grid spacing, time step, and source frequencies.