Synthetic Aperture Focusing of Ultrasonic Data From Multilayered Media Using an Omega-K Algorithm

被引:95
|
作者
Skjelvareid, Martin H. [1 ]
Olofsson, Tomas [2 ]
Birkelund, Yngve [1 ]
Larsen, Yngvar [3 ]
机构
[1] Univ Tromso, Dept Phys & Technol, Tromso, Norway
[2] Uppsala Univ, Dept Engn Sci, Signals & Syst Grp, Uppsala, Sweden
[3] No Res Inst, Dept Earth Observat, Tromso, Norway
关键词
FOURIER-TRANSFORM; FREQUENCY-DOMAIN; MIGRATION; ARRAY;
D O I
10.1109/TUFFC.2011.1904
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
The synthetic aperture focusing technique (SAFT) is used to create focused images from ultrasound scans. SAFT has traditionally been applied only for imaging in a single medium, but the recently introduced phase shift migration (PSM) algorithm has expanded the use of SAFT to multilayer structures. In this article we present a similar focusing algorithm called multi-layer omega-k (MULOK), which combines PSM and the omega-k algorithm to perform multilayer imaging more efficiently. The asymptotic complexity is shown to be lower for MULOK than for PSM, and this is confirmed by comparing execution times for implementations of both algorithms. To facilitate the complexity analysis, a detailed description of algorithm implementation is included, which also serves as a guide for readers interested in practical implementation. Using data from an experiment with a multilayered structure, we show that there is essentially no difference in image quality between the two algorithms.
引用
收藏
页码:1037 / 1048
页数:12
相关论文
共 50 条
  • [1] FOCUSING SYNTHETIC APERTURE SONAR (SAS) DATA WITH THE OMEGA-K TECHNIQUE
    De Paulis, R.
    Prati, C.
    Rocca, F.
    Scirpoli, S.
    Tebaldini, S.
    2009 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, VOLS 1-5, 2009, : 68 - +
  • [2] An omega-k algorithm for multireceiver synthetic aperture sonar
    Zhang, Xuebo
    Yang, Peixuan
    Sun, Haixin
    ELECTRONICS LETTERS, 2023, 59 (13)
  • [3] New Results on the Omega-K Algorithm for Processing Synthetic Aperture Radar Data
    Tolman, Matthew A.
    Long, David G.
    2011 IEEE RADAR CONFERENCE (RADAR), 2011, : 868 - 873
  • [4] Inverse Omega-K Algorithm for the Electromagnetic Deception of Synthetic Aperture Radar
    Liu, Yongcai
    Wang, Wei
    Pan, Xiaoyi
    Fu, Qixiang
    Wang, Guoyu
    IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING, 2016, 9 (07) : 3037 - 3049
  • [5] A novel modified Omega-K algorithm for synthetic aperture imaging lidar through the atmosphere
    Guo, Liang
    Xing, Mendao
    Tang, Yu
    Dan, Jing
    SENSORS, 2008, 8 (05) : 3056 - 3066
  • [6] Bistatic SAR Data Focusing Using an Omega-K Algorithm Based on Method of Series Reversion
    Liu, Baochang
    Wang, Tong
    Wu, Qisong
    Bao, Zheng
    IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 2009, 47 (08): : 2899 - 2912
  • [7] Doppler Factor in the Omega-k Algorithm for Pulsed and Continuous Wave Synthetic Aperture Radar Raw Data Processing
    Jancco-Chara, Jhohan
    Palomino-Quispe, Facundo
    Coaquira-Castillo, Roger Jesus
    Herrera-Levano, Julio Cesar
    Florez, Ruben
    APPLIED SCIENCES-BASEL, 2024, 14 (01):
  • [8] Focusing Bistatic Forward-Looking Synthetic Aperture Radar Based on an Improved Hyperbolic Range Model and a Modified Omega-K Algorithm
    Wang, Chenchen
    Su, Weimin
    Gu, Hong
    Yang, Jianchao
    SENSORS, 2019, 19 (17)
  • [9] Extended Omega-k algorithm for synthetic aperture radar imaging in multi-layer medium
    Zheng Hai-Tao
    Li Shi-Yong
    Do, James
    Sun Hou-Jun
    Liu Xiao-Guang
    JOURNAL OF INFRARED AND MILLIMETER WAVES, 2020, 39 (03) : 381 - 387
  • [10] A REFINED OMEGA-K ALGORITHM FOR FOCUSING HIGHLY SQUINT AIRBORNE STRIPMAP SAR DATA
    Zeng, Hong-cheng
    Chen, Jie
    Yang, Wei
    Cui, Zhong-ma
    Zhang, Hao-jie
    2013 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS), 2013, : 934 - 937