理论子波ricker子波作震源，应用fft对其做频谱分析成图,然后通过各种滤波方式（矩形门，梯形门等）滤波，再做频谱分析然后返回时间域成图-Ricker wavelet theory for the source wavelet, application to do fft spectrum analyzer on its map, and then filtering through a variety of methods (rectangular door, trapezoidal doo