The theoretical analysis and the results of computer simulation showed that it is possible to build a cancellingsignal by means of code transformation.
Aimed at noise cancelling cut for ultrasonic inspecting signal of seabed oil pipeline flaw, a kind of noise cancellation method based on wavelet analysis is studied.
针对海底石油管道超声检测信号的噪声消除问题，本文研究了基于小波分析的噪声消除方法。
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So the adaptive theory has been introduce to realize the noise signalcancelling.