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工程设计学报
Chinese Journal of Engineering Design  2000, Vol. 7 Issue (4): 131-133    DOI:
    
A New Split Spectrum Processing Technique
 YANG  Ke-Ji
Mechanical Engineering Department, Zhejiang Univ ersity, Hangzhou 310027, China
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Abstract  By replacing of Gaussian filters in split spect rum processing using RAC filters, a new split spect rum processing technique is presented in this paper. High performance reliability and great SNR improving ability of this technique are testified by some practical results.

Key words： material noise      signal-to-noise ratio( SNR)      split spectrum processing      RAC filter     
Published: 15 December 2000
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Cite this article:

YANG Ke-Ji. A New Split Spectrum Processing Technique. Chinese Journal of Engineering Design, 2000, 7(4): 131-133.

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https://www.zjujournals.com/gcsjxb/     OR     https://www.zjujournals.com/gcsjxb/Y2000/V7/I4/131


一种改进型裂谱分析方法

本文采用平顶升余弦（ＲＡＤ）滤波器代替传统裂谱分析方法中的高斯型滤波器，提出了一种改进型裂谱分析方法，实验结果主宰了新方法具有很高性能稳定性和增强湮没晶粒（或其他散射体）散射中的缺陷回波信号能力。

关键词： 材料噪声,  信噪比,  裂谱分析,  平顶升余弦( RAC) 滤波器 
[1] SHEN Xiao-An. Denoising techniques for ultrasonic signals based on lifting wavelet transform[J]. Chinese Journal of Engineering Design, 2009, 16(3): 227-229.
[2] SHEN Xiao-An, YANG Ke-Ji. Split spectrum processing technique based on wavelet transform[J]. Chinese Journal of Engineering Design, 2008, 15(5): 361-364.