信号奇异性仿真及其在反射波同相轴检测中的应用

Signal Singularity Simulation and Application to Reflected Waves Events Detection

用dbN系列小波对两类具有第二类奇异点的信号进行了数值仿真,通过对两例的多尺度分解,叙述了dbN系列小波正则性与检测效果间的关系,并由此选取了db5为小波基函数对南水北调某地地震反射波资料的同相轴进行了检测,结果表明分析是合理的,方法是可靠的.

Two kinds of signal with second singularity point are numerically simulated with dbN series wavelets.The relation between regularity and detection effects for dbN series wavelets is described in detail by two examples of multi-scale wavelet analysis;and certain earthquake reflected waves events data are detected by db5 which is selected to be the wavelet basis function.The result of detection demonstrates that the analysis is rational;and the method is reliable.