Full determination of elastic scatterer characteristics from FFP measurements

Abstract : A multi-stage computational strategy is proposed for determining all elastic scatterer characteristics including the shape, the material properties (Lam\'e coefficients and density), and the location from the knowledge of far-field pattern (FFP) measurements. The main feature of this new methodology is to utilize the well-known Tikhonov Newton algorithm in a multi-stage solution strategy. The adopted approach is critical for recognizing that the different nature and scales of the sought-after parameters as well as the frequency regime have different effect on the scattering observability. Numerical results obtained for illustrative two-dimensional elastic configurations highlight the performance of the designed solution methodology.
Document type :
Reports
Complete list of metadatas

Cited literature [56 references]  Display  Hide  Download

https://hal.inria.fr/hal-01976990
Contributor : Julien Diaz <>
Submitted on : Thursday, January 10, 2019 - 2:38:17 PM
Last modification on : Wednesday, July 24, 2019 - 4:02:06 PM
Long-term archiving on : Thursday, April 11, 2019 - 3:11:19 PM

File

RR-9247.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : hal-01976990, version 1

Citation

Izar Azpiroz, Hélène Barucq, Julien Diaz, Rabia Djellouli. Full determination of elastic scatterer characteristics from FFP measurements. [Research Report] RR-9247, INRIA Bordeaux; California State University at Northridge. 2019, pp.72. ⟨hal-01976990⟩

Share

Metrics

Record views

77

Files downloads

103