【摘要】 存储大量的管道漏磁检测信号迫切需要有效的数据压缩技术.小波变换具有良好的时频局部化特性,根据管道漏磁无损检测中噪声信号的特性,应用具有线性相位的双正交样条小波,对漏磁信号进行分解,有效地消除测量噪声,同时实现了数据压缩和特征提取.实验表明,该方法可得到适度的压缩比和较高的信噪比,并能满足后续处理的需要.更多还原

【Abstract】 Effective and real -time needed data compression and orecessmy technolo gy is necessary.mass of to deal with the data from pipeline magn etic flux leakage .The paper present s a alorithm that applies bi -orthogonal spline wavelet on wavelet decomposition and reconstruction of MFL signal.It eliminates measure noise effec tively,and at same time implements data comp ression and feature extraction.Example is provided to show the real -tim e compression and high signal -to -noise rate could be obtained.更多还原