【作者】 陈洁； 沈远彤； 李宏伟；

【Author】 Chen Jie Shen Yuantong Li Hongwei (School of Mathematics & Physics,China University of Geosciences,430074,Wuhan)

【机构】 中国地质大学数理学院；

【摘要】 谐波小波作为一类小波,存在确定的函数表达式,时频定位准确,算法实现简单。本文基于谐波小波变换,利用其良好的频域盒形谱特性,对多频信号中的弱信号及强噪声中的弱信号检测进行研究,并与原始的纯信号进行比较,模拟结果表明此方法是有效的。更多还原

【Abstract】 Harmonic wavelet is a class of wavelet,and it has following advantages:existing certain function expression; locating more precisely in time-frequency domain;algorithm is simpler.According to the excellent box-like spectrum of harmonic wavelet,We apply harmonic wavelet in extracting the weak signal from strong noise.Moreover,we compared experiment result with the original pure signal.Emulation results show that this method is effective.更多还原