A neural network scheme for recovering scattering obstacles with limited phaseless far-field data
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Related Research Unit(s)
Detail(s)
Original language | English |
---|---|
Article number | 109594 |
Journal / Publication | Journal of Computational Physics |
Volume | 417 |
Online published | 27 May 2020 |
Publication status | Published - 15 Sept 2020 |
Link(s)
Abstract
We consider a geometrical inverse scattering problem of recovering impenetrable obstacles by the associated far-field measurements. The case with phaseless or even limited-aperture far-field data has recently received considerable attentions in the literature due to its practical importance and theoretical challenge. We propose a two-layer sequence-to-sequence neural network that can effectively and efficiently tackle this inverse problem with limited-aperture phaseless data. Superposing the incident waves in generating the training dataset is a crucial ingredient in the architecture of the network. The network state is selectively updated to preserve the specific structure of the underlying data through a gated idea and the use of the long-term memory function from the Long Short-Term Memory (LSTM) neural network. The weights and offsets of the network are updated by optimization algorithms. Both theoretical convergence analysis and extensive numerical experiments are conducted for the proposed method.
Research Area(s)
- Convergence, Inverse scattering problem, Limited-aperture, Long Short-Term Memory neural network, Phaseless
Citation Format(s)
A neural network scheme for recovering scattering obstacles with limited phaseless far-field data. / Yin, Weishi; Yang, Wenhong; Liu, Hongyu.
In: Journal of Computational Physics, Vol. 417, 109594, 15.09.2020.
In: Journal of Computational Physics, Vol. 417, 109594, 15.09.2020.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review