A new coding scheme in coded ultrasound using staggering repetition interval
A new coding scheme in coded ultrasound using staggering repetition interval
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一种使用交错重复间隔的编码超声新编码方案
DOI：
10.1631/jzus.a0820762
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发表时间：
2009-08
影响因子：
3.2
通讯作者：
Chen, Si-ping
中科院分区：
文献类型：
--
作者：
Jin, Cheng;Qin, Zheng-di;Chen, Si-ping
帧速率的增加虽然在编码超声系统中具有潜力，但通常伴随着多个孔径的同时传输，因此导致不同孔径之间的串扰增加。鉴于此，提出了一种使用交错重复间隔的新编码方案。通过使用交错的重复间隔重复两个（或多个）调制码来构造发射信号，然后分配到不同的孔径并在不同的孔径之间同时发射。解码过程基于分段匹配滤波器，并在不同孔径的不同匹配滤波器的帮助下进行。最后将分段匹配滤波的输出相加。交错改变了互相关 (CC) 峰值的重合位置，从而有效减少了 CC。我们的理论分析和仿真表明，该编码方案可以用来减少串扰，并且如果将交错延迟保持在适当的范围内，将实现良好的串扰减少。
The increase of frame rate, though with the potential in a coded ultrasound system, is generally concomitant with the simultaneous transmission of a number of apertures, and in consequence leads to increased cross-talks between different apertures. In view of this, a new coding scheme using staggering repetition interval was proposed. The transmitting signals were constructed by repeating the two (or more) modulated codes using staggering repetition interval, and then allocated to and transmitted simultaneously among different apertures. The decoding process was based on the subsection-matched filter under the assistance of different matched filters for different apertures. At last the outputs of subsection-matched filtering were added together. Staggering changed the positions of cross-correlation (CC) peaks from coinciding, which resulted in an effective reduction of CC. Our theoretical analysis and simulations showed that, the coding scheme can be used to reduce cross-talk, and a good cross-talk reduction will be achieved if the staggering delay is kept in an appropriate range.
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影响因子：
4.2
作者：
Y. Takeuchi
通讯作者：
Y. Takeuchi
影响因子：
3.5
作者：
A. Thrush;T. Hartshorne
通讯作者：
A. Thrush;T. Hartshorne
DOI：
10.1109/isbi.2004.1398618
发表时间：
2004-04
期刊：
2004 2nd IEEE International Symposium on Biomedical Imaging: Nano to Macro (IEEE Cat No. 04EX821)
影响因子：
--
作者：
J. Jensen
通讯作者：
J. Jensen
DOI：
10.1109/tuffc.2005.1406544
发表时间：
2005-02-01
影响因子：
3.6
作者：
O'Donnell, M;Wang, Y
通讯作者：
Wang, Y
DOI：
10.1109/tuffc.2008.613
发表时间：
2008-02
期刊：
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
影响因子：
--
作者：
F. Gran;J. Jensen
通讯作者：
F. Gran;J. Jensen