25 February 2014 Kinetic and fluid dynamic processes in diode pumped alkali lasers: semi-analytical and 2D and 3D CFD modeling
Author Affiliations +
Abstract
In the last four years, a few research groups worked on the feasibility of compressive sampling (CS) in ultrasound medical imaging and several attempts of applying the CS theory may be found in the recent literature. In particular, it was shown that using iotap-norm minimization with p different from 1 provides interesting RF signal reconstruction results. In this paper, we propose to further improve this technique by processing the reconstruction in the Fourier domain. In addition, alpha -stable distributions are used to model the Fourier transforms of the RF lines. The parameter p used in the optimization process is related to the parameter alpha obtained by modelling the data (in the Fourier domain) as an alpha -stable distribution. The results obtained on experimental US images show significant reconstruction improvement compared to the previously published approach where the reconstruction was performed in the spatial domain.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Boris D. Barmashenko, Boris D. Barmashenko, Salman Rosenwaks, Salman Rosenwaks, Karol Waichman, Karol Waichman, } "Kinetic and fluid dynamic processes in diode pumped alkali lasers: semi-analytical and 2D and 3D CFD modeling", Proc. SPIE 8962, High Energy/Average Power Lasers and Intense Beam Applications VII, 89620C (25 February 2014); doi: 10.1117/12.2036073; https://doi.org/10.1117/12.2036073
PROCEEDINGS
15 PAGES


SHARE
Back to Top