Abstract
For large-scale inverse problems in acoustics and electromagnetics, numerical schemes based on direct methods, e.g. FEM and meshless methods, often result in huge linear systems, and thus are not feasible in terms of computing speed and memory storage. This work proposes the “inverse fundamental operator marching method” based on the Dirichlet-to-Neumann map for solving large-scale inverse boundary-value problems in range-dependent waveguides. Truncated singular value decomposition is employed to solve ill-conditioned linear systems arising in marching process, and the number of propagating modes in the waveguide assumes the role of a regularization parameter. Numerical results show that the method is computationally efficient, highly accurate, stable with respect to data noise for retrieving the propagating part of the starting field. It particularly suits to long-range wave propagation in slowly varying stratified waveguide.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Computer Methods in Applied Mechanics and Engineering
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
