摘要
小波包是对多分辨分析方法的改进,它同时对分解结果的低频和高频部分进行再分解因而提高了对信号高频部分的频率分解率,适用于对信号进行分离、谐波分析等。本文从小波包定义出发,把它用于井下供电缆线路故障检测中并给出了算例,分析了计算结果。同时提出了利用小波包变换进行检测时应注意的问题。
Wavelet packet is multiresolution analysis methods improved, it also results in the decomposition of low-frequency and high-frequency re-decomposition thereby enhancing the signal frequency of high-frequency part of the decomposition rate. applied to the signal separation, harmonic analysis. This paper wavelet packet definition, it used for underground cable line fault detection and gives examples of the calculation results. At the same time, the use of wavelet packet transform detection attention should be paid to problems
出处
《电子质量》
2008年第4期48-50,共3页
Electronics Quality
