【摘要】 地震加速度监测中,实时、准确的事件检测具有重要意义。事件检测的常用方法是STA/LTA算法,使用地震加速度原始数据。考虑将地震加速度原始数据进行带通滤波和加速度速度数据转换,再使用STA/LTA算法。研究表明,带通滤波和速度数据都能优化事件检测的效果;二阶同四阶带通滤波效果差别不大;同时使用二阶带通滤波和速度数据的策略检测效果最好。更多还原

【Abstract】 In earthquake acceleration monitoring,quick and accurate event detection is significant.The STA/LTA algorithm based on original earthquake acceleration data is often used in event detection(triggering P-wave).A strategy is presented,which at first,processes the earthquake acceleration data in two ways band-pass filtering and velocity data computing then uses the STA/LTA algorithm.The study shows that band-pass filtering and velocity data computing can both enhance the effect on event detection,hopwever,the effects of second and fourth order band-pass filtering are slightly different and it is better by using second order band-pass filtering and velocity data computing.更多还原