Chirp信号脉冲压缩方法，时域。通过在时域上加上匹配滤波器的方式，采用X CORR或者CONV卷积的形式得到结果-Chirp signal pulse compression in time domain. Designed through filter which is matched with the signal by XCORR or CONV.

rain.corr.gs文件，绘制1951-2013年 1月Nino34海温指数与7月中国160站降水相关系数图(Rain. Corr.gs documents, drawing from 1951 to January 2013, the Nino34 haiwen index and July 160 precipitation correlation coefficient map of China)