摘要
为了提高爆破振动信号精度,采用小波阈值去噪方法对爆破振动信号进行去噪,在去噪过程中阈值与阈值函数的选取是关键,阈值与阈值函数选取的合适与否将直接影响到消噪的效果。研究结果表明:heursure和sqtwolog两种阈值的去噪效果比较好;软阈值函数较硬阈值函数有更好的去噪效果。
In order to improve the accuracy of blasting vibration signals, the wavelet threshold denoising method was used to de-noise blasting vibration signals, the selection of threshold and threshold function were very important in process of de-noising, which will influence the result of de-noising. The results showed that the better de-noising result might be obtained by heursure and sqtwolog; soft threshold function was better than hard threshold function in the result of de-noising.
出处
《低温建筑技术》
2010年第7期46-48,共3页
Low Temperature Architecture Technology
关键词
爆破振动
阈值
阈值函数
blasting vibration
threshold
threshold function
