Synthetic Aperture Ultrasonic Imaging Algorithm Based on Robust Capon Beamforming in Eigenspace

Authors

Yecai Guo, 1. College of Electronic and Information Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China;; ;2. Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment, Nanjing University of Information Science & Technology, Nanjing 210044, China;;
Xiaoxing Ji, 1. College of Electronic and Information Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China;; ;

Abstract

Abstract: In order to lower the main lobe width and side lobe amplitude of SAF beams ,improve the robustness of ultrasound imaging algorithm, resolution, contrast in images, a synthetic aperture ultrasonic imaging algorithm based on robust Capon beamforming in eigenspace is proposed. Under the principle of MV, this algorithm firstly uses the Toeplitz to realize the reconstruction of the interference-noise covariance matrix and keep it nonsingular. Secondly, the vector error is constrained by the signal subspace and the elliptic constraint set in feature space. Finally, the optimal weight vector which is used to weight and image the echo data is obtained by Lagrange multiplier method and dichotomy. The simulation results show that ultrasonic image obtained by this method performs better in anti-interference, contrast and resolution and improves the quality of ultrasonic images effectively.

Recommended Citation

Guo, Yecai and Ji, Xiaoxing (2019) "Synthetic Aperture Ultrasonic Imaging Algorithm Based on Robust Capon Beamforming in Eigenspace," Journal of System Simulation: Vol. 31: Iss. 8, Article 18.
DOI: 10.16182/j.issn1004731x.joss.17-0388
Available at: https://dc-china-simulation.researchcommons.org/journal/vol31/iss8/18

First Page

1646

Revised Date

2017-10-10

DOI Link

https://doi.org/10.16182/j.issn1004731x.joss.17-0388

Last Page

1652

CLC

TN911.7;TN912.1

Recommended Citation

Guo Yecai, Ji Xiaoxing. Synthetic Aperture Ultrasonic Imaging Algorithm Based on Robust Capon Beamforming in Eigenspace[J]. Journal of System Simulation, 2019, 31(8): 1646-1652.

DOI

10.16182/j.issn1004731x.joss.17-0388