期刊文献+

基于交叉扫描的LTI在超声层析中的应用 被引量:5

The LTI Algorithm based on Scan-cross Applying in Ultrasonic CT
在线阅读 下载PDF
导出
摘要 目的研究线性插值射线追踪的新方法,提高追踪精度。方法在基本的线性插值射线追踪的基础上,对每一网格单元边界的周围结点进行上下左右交叉扫描。结果和结论本算法,在保留原有算法的优点的基础上,解决了基本算法中当发射点所在列有低速区时,与发射点同列的接收点的走时路径无法绕开该区域的缺点,提高了算法的精度。 Aim Study on new method of LTI for improve the precision of tracing, and improve the tracing precision. Methods On the basis of LTI algorithm, this methods adopts up-down and right-left algorithm to scan every gridding across. Results and Conclusion The results shows that this algorithm remain the virtue of LTI, and solve a neglect of LTI. The neglect in that if the transmitting spot and the receiving spot in the same row, and there a low-velocity area in this row then the tracing waves can not keeping away from this area. In addition, this algorithm is more precise than LTI.
出处 《微计算机信息》 北大核心 2007年第26期109-110,96,共3页 Control & Automation
基金 国家自然基金资助(60372073)
关键词 线性插值 射线追踪 交叉扫描 超声CT MATLAB仿真 linear interpolation, ray tracing, scan-cross, ultrasonic CT, Matlab simulation
作者简介 殷黎(1980-),女(汉),重庆万州人,硕士研究生,专业:信号与信息处理;通讯地址:(030051山西省太原市中北大学1304信箱)殷黎 韩焱(1957-),男(汉),山西人,教授,博士生导师,主要从事信息处理与重建、数字图像处理等技术方面的研究工作。
  • 相关文献

参考文献3

二级参考文献15

  • 1徐涛,徐果明,高尔根,蒋先艺.复杂介质的折射波射线追踪[J].石油地球物理勘探,2004,39(6):690-693. 被引量:7
  • 2Kak A C ''Computerized tomography with X-ray,emission,and ultrasound sources.''Proceedings of the IEEE,1979,67(9): 1245-1272
  • 3R.K.Mueller,M.Kaveh,and G.Wade,''Reconstructive tomography and applications to ultrasonics,'' Proc.IEEE,vol.67,pp.567-587,1979.
  • 4A.C.Kak and M.Slaney,Principles of Computerized Tomographic Imaging,Society of Industrial and Applied Mathematics,2001.
  • 5K.Fourmont,''Non-equispaced fast Fourier transforms with application to tomography'',www.math.uni-muenster.de/num/fourmont/publ.ps
  • 6A Dutt and V Rokhlin,''Fast Fourier transforms for nonequispaced data,'' SIAM J.Sci.Comp.,vol.14,no.6,pp.1368-93,Nov.1993.
  • 7J.F.Kaiser(1966),Digital filters in: F.Kuo and J.F.Kaiser (eds.):System analysis by Digital Computers,218-285.
  • 8刘怀山 张进 1 1.中国近海和滩浅海油气资源勘探开发初步研究[J].青岛海洋大学学报,2003,33.
  • 9Asakawa Eiichi, Kawanaka Taku. Seismic ray tracing using linear traveltime interpolation,. [ J ], Geophysics Prospecting, 1993, 41(1):99.
  • 10Ettore Cardarelli, Antonio Cerreto. Ray tracing in elliptical anisotropic media using the linear traveltime interpolation (LTI) method applied to traveltime seismic tomography [ J ]. Geophysics Prospecting,2002,50( 1 ) :55.

共引文献9

同被引文献19

引证文献5

二级引证文献24

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部