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讨论了小波变换的光学实现方法，选择Ｍｅｘｉｃａｎ－ｈａｔ小波对光学信号提取进行了数值模拟，发现Ｍｅｘｉｃａｎ－ｈａｔ小波在信号提取方面的缺陷，在此基础上，提出了一种新的小波，并进行了数值模拟，证明了新小波的优点
Discussed the optical realization method of wavelet transform, chose Mexican-hat wavelet to carry on the numerical simulation of optical signal extraction, and found the defect of Mexican-hat wavelet in signal extraction. On this basis, a new wavelet was proposed The numerical simulation proves the advantages of the new wavelet