摘要
利用小波方法去噪,是小波分析应用于实际的重要方面。小波去噪的关键是如何选择阈值和如何利用阈值来处理小波系数,通过对几种去噪方法比对分析和基于MATLAB信号去噪的仿真试验,验证了小波去噪的优越性。通过对现场采集到的输油管线压力信号去噪处理,结果表明,该方法可以有效去除噪声。
Wavelet denoising is an important application of wavelet analysis in engineering. The keys of wavelet denoising, namely how to select threshold and how to utilize the threshold to dispose wavelet coefficients, are introduced. Via the noised simulated signal experiment based on MATLAB, the advantage of wavelet denoising is demonstrated. Then it is taken to analyze denoised pressure signal of the oil pipeline. The result shows that noises are eliminated effectively.
出处
《信息与电子工程》
2008年第3期220-222,229,共4页
information and electronic engineering
基金
陕西省教育厅自然科学研究项目(Z06020)
