【摘要】 针对固定台接收到的小药量激发的人工震源信号信噪比低的问题,基于人工震源激发的相似性,采用相位互相关和相位权重叠加的方法检测固定台站接收到的微弱信号,提高了弱信号的检测能力,可在200 km距离处接收到数十千克当量的炸药激发的信号。更多还原

【Abstract】 In recent years more and more artificial sources are used to explore underground structures in the regional scale deep exploration.Usually,signals from artificial seismic source have low SNR(signal to noise ratio).Artificial source has a certain degree of repeatability among different shots.On the basis of this character,we use phase cross-correlation and phase weighted stack which can effectively improve the clarity of the signal to detect weak signal.The study shows that by use of dozens of kilograms of explosives the signal can be detected from the distance of 200 km.更多还原