双约束变换时窗统计能量比地震波初至拾取方法

时伟, 林春华, 王维红, 高云路

A first arrival pickup method of micro-seismic event based on statistic energy ratio using varied time window with double constraints

Wei SHI, Chun-Hua LIN, Wei-Hong WANG, Yun-Lu GAO

图4 加入高斯白噪声的合成地震记录及不同方法的拾取结果 a—信噪比为3的地震记录及人工拾取结果;b—STA/LTA法拾取结果;c—变换时窗统计能量比法拾取结果;d—双约束变换时窗统计能量比法拾取结果

Fig.4 Earthquake record with noise added and calculation results of different methods a—seismic record and manual pick up result with signal to noise ratio is 3;b—STA/LTA method calculation result;c—conversion window statistical energy ratio calculation result;d—calculation result of conversion window energy ratio method based on statistical principle and double constraint