摘要
从小波变换的奇异性分析入手,给出应用于超声检测信号去噪的小波模极大值算法,并选用Marr函数做小波基函数。该算法对超声合成信号和实测信号的去噪效果均很理想,而且对存有可疑信号点的材料进行的金相分析再一次验证了算法的正确性。
The signal singularity was firstly analysed. Modulus maximum denoising algorithm based wavelet transform for ultrasonic testing signal was presented and Marr function was used as mother function. The algorithm＇s effect on denoising the composed signal and the natural signal was perfect. The microcosmic structure analyses on some representational points proved the algorithm feasible again.
出处
《无损检测》
北大核心
2007年第1期20-23,共4页
Nondestructive Testing
关键词
超声检测
小波变换
去噪分析
Ultrasonic testing
Wavelet transform
Denoising analysis
