| 基于完全匹配小波的新型信号检测方法 |
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| 引用本文： | 丁爱玲,石光明,陈旭阳,焦李成.基于完全匹配小波的新型信号检测方法[J].电子学报,2008,36(9):1759-1762. |
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| 作者姓名： | 丁爱玲 石光明 陈旭阳 焦李成 |
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| 作者单位： | 1. 西安电子科技大学电子工程学院,陕西西安,710071;长安大学信息工程学院,陕西西安,710064
2. 西安电子科技大学电子工程学院,陕西西安,710071 |
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| 摘 要： | 本文提出一种新颖的信号检测方法.以自行构造的小波函数为发射信号,并选用该小波函数为基函数进行回波检测,实现完全意义的匹配小波信号检测.文中给出了此方法的原理及实现结构,从理论上分析了该方法的优点,并针对超声回波信号检测进行了仿真.结果表明,在信噪比为-17dB时,也能够检测出信号.与通常小波检测方法相比,本文方法提高了对弱小信号的检测能力.
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| 关 键 词： | 超声探测 匹配小波 滤波器组 信号检测 |
| 收稿时间： | 2007-03-09 |
A New Approach for Ultrasound Echo Detection Based on Best Matched Wavelet |
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| DING Ai-ling,SHI Guang-ming,CHEN Xu-yang,JIAO Li-cheng.A New Approach for Ultrasound Echo Detection Based on Best Matched Wavelet[J].Acta Electronica Sinica,2008,36(9):1759-1762. |
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| Authors: | DING Ai-ling SHI Guang-ming CHEN Xu-yang JIAO Li-cheng |
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| Affiliation: | DING Ai-ling1,2,SHI Guang-ming1,CHEN Xu-yang1,JIAO Li-cheng1(1.School of Electronic Engineering,Xidian University,Xi\'an,Shaanxi 710071,China,2.School of Information Engineering,Chang\'an University,Shaanxi 710064,China) |
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| Abstract: | This paper proposed an novel method for detecting echo signals.The wavelet function is used as the transmitted signal and the echo signal is detected with the corresponding completely same wavelet base.So the best match can be arrived.The advantage and implementation of new method was described.The simulation of the ultrasonic detection indicates the validity of the new way.The numerical results show good detection even for SNR of-17dB.Comparing with traditional method,the new method can increase the abilit... |
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| Keywords: | ultrasonic testing matched wavelet filter banks signal detection |
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