Publications [#283820] of Qing H. Liu

Papers Published

1. Fan, GX; Liu, QH; Hesthaven, JS, Multidomain pseudospectral time-domain simulations of scattering by objects buried in lossy media, Ieee Transactions on Geoscience and Remote Sensing, vol. 40 no. 6 (June, 2002), pp. 1366-1373, Institute of Electrical and Electronics Engineers (IEEE), ISSN 0196-2892 [doi]
   (last updated on 2023/08/08)

   Abstract:
   A multidomain pseudospectral time-domain (PSTD) method with a newly developed well-posed PML is introduced as an accurate and flexible tool for the modeling of electromagnetic scattering by 2-D objects buried in an inhomogeneous lossy medium. Compared with the previous single-domain Fourier PSTD method, this approach allows for an accurate treatment of curved geometries with subdomains, curvilinear mapping, and high-order Chebyshev polynomials. The effectiveness of the algorithm is confirmed by an excellent agreement between the numerical results and analytical solutions for perfectly conducting as well as permeable dielectric cylinders. The algorithm has been applied to model various ground-penetrating radar (GPR) applications involving curved objects in a lossy half space with an undulating surface. This multidomain PSTD algorithm is potentially a very useful tool for simulating antennas near complex objects and inhomogeneous media.