Reverse time migration for reconstructing extended obstacles in planar acoustic waveguides  

作　　者：CHEN ZhiMing HUANG GuangHui 

机构地区：[1]LSEC, Institute of Computational Mathematics and Scientific Engineering Computing,Academy of Mathematics and Systems Science, Chinese Academy of Sciences

出　　处：《Science China Mathematics》2015年第9期1811-1834,共24页中国科学：数学（英文版）

基　　金：supported by National Key Basic Research Program of China(973 Program)(Grant No.2011CB309700);National Natural Science Foundation of China(Grant Nos.11021101 and11321061)

摘　　要：We propose a new reverse time migration method for reconstructing extended obstacles in the planar waveguide using acoustic waves at a fixed frequency. We prove the resolution of the reconstruction method in terms of the aperture and the thickness of the waveguide. The resolution analysis implies that the imaginary part of the cross-correlation imaging function is always positive and thus may have better stability properties.Numerical experiments are included to illustrate the powerful imaging quality and to confirm our resolution results.We propose a new reverse time migration method for reconstructing extended obstacles in the planar waveguide using acoustic waves at a fixed frequency. We prove the resolution of the reconstruction method in terms of the aperture and the thickness of the waveguide. The resolution analysis implies that the imaginary part of the cross-correlation imaging function is always positive and thus may have better stability properties.Numerical experiments are included to illustrate the powerful imaging quality and to confirm our resolution results.

关 键 词：reverse time migration planar waveguide resolution analysis extended obstacle 

分 类 号：O426[理学—声学]