摘要
本文采用平顶升余弦 (RAC)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 ,实验结果证实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。
By replacing of Gaussian filters in split spectrum processing using RAC filters, a new split spectrum processing technique is presented in this paper.High performance reliability and great SNR improving ability of this technique are testified by some practical results.
出处
《工程设计学报》
CSCD
2000年第4期131-133,共3页
Chinese Journal of Engineering Design
关键词
材料噪声
裂谱分析
RAC滤波器
超声无损检测
material noise
signal to noise ratio(SNR)
split spectrum processing
RAC filter
