An optimization approach to multi-dimensional time domain acoustic inverse problems
Author
Summary, in English
An optimization approach to a multi-dimensional acoustic inverse problem in the time domain is considered. The density and/or the sound speed are reconstructed by minimizing an objective functional. By introducing dual functions and using the Gauss divergence theorem, the gradient of the objective functional is found as an explicit expression. The parameters are then reconstructed by an iterative algorithm (the conjugate gradient method). The reconstruction algorithm is tested with noisy data, and these tests indicate that the algorithm is stable and robust. The computation time for the reconstruction is greatly improved when the analytic gradient is used.
Publishing year
2000
Language
English
Pages
56-1548
Publication/Series
Journal of the Acoustical Society of America
Volume
108
Issue
4
Document type
Journal article
Publisher
American Institute of Physics (AIP)
Topic
- Other Electrical Engineering, Electronic Engineering, Information Engineering
- Electrical Engineering, Electronic Engineering, Information Engineering
Status
Published
Research group
- Electromagnetic theory
ISBN/ISSN/Other
- ISSN: 1520-8524