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2010-08-25
The Level Set Shape Reconstruction Algorithm Applied to 2D PEC Targets Hidden Behind a Wall
By
Progress In Electromagnetics Research B, Vol. 25, 131-154, 2010
Abstract
The level set algorithm is extended to handle the reconstruction of the shape and location of objects hidden behind a dielectric wall. The Green's function of stratified media is used to modify the method of moments and the surface integral equation forward solver. Due to the oscillatory nature of the Sommerfeld integrals, the stationary phase approximation is implemented here to achieve fast and accurate reconstruction results, especially when the targets are located adequately far from the wall. Transverse Magnetic (TM) plane waves are employed for excitation with limited view for transmitting and receiving the waves in the far field at one side of the wall. The results show the capability of the level set method for retrieving the shape and location of multiple 2D PEC objects of arbitrary shapes even when there are located at a small distance from the wall. To reduce the computational expenses of the algorithm in the case of multiple hidden objects, the MPI parallelization technique is implemented leading to a reduction in the CPU time from hours on a single processor to few minutes using 128 processors on the NCSA Supercomputer Center.
Citation
Mohammad Reza Hajihashemi, and Magda El-Shenawee, "The Level Set Shape Reconstruction Algorithm Applied to 2D PEC Targets Hidden Behind a Wall," Progress In Electromagnetics Research B, Vol. 25, 131-154, 2010.
doi:10.2528/PIERB10072612
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