Wavelet analysis,also known as multi-resolution analysis,is a new analytical processing tool based on Fourier analysis,functional analysis,spline analysis and harmonic analysis,known as the mathematical microscope of signal analysis.In the non-destructive testing of anchorage,due to the influence of the external environment and the instrument itself,the collected signal is easy to be disturbed by noise,which affects the recognition and processing of the signal.Using Matlab signal processing software,the measured signal is processed by wavelet analysis,which effectively eliminates the noise interference,makes the characteristic points of the reflected signal easier to identify,achieves the purpose of filtering and eliminating noise,and improves the accuracy of the detection results.
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