摘要
为提高可控震源地震信号的信噪比,将雷达系统的相控阵技术应用于可控震源地震,通过控制相邻震源的相位差恒定,使地震波能量集中,产生定向地震波束,加强有用信号的强度,从而提高了地震信号的信噪比.在给定条件下,与单震源地震和组合震源地震相比,相控地震的信噪比最高.因此,将相控技术应用于可控震源是可行的.
In order to improve SNR of seismic signal for controlled vibroseis in seismic exploration, a set of phased array vibroseises is developed for generating directional seismic wave by controlling differences of phases between neighboring vibroseises, and a special seismic signal detection method for phased array vibroseises is proposed. The phased array seismic signal detection result is given and compared with single and combination vibroseises under the same experience condition. It concluded that using phased array technology in vibroseis seism is feasible and the seismic signals from phased array vibroseises are better than combination vibroseises seism.
出处
《控制与决策》
EI
CSCD
北大核心
2004年第12期1345-1348,1353,共5页
Control and Decision
基金
国家863计划基金资助项目(2002AA135240).
关键词
可控震源
相控阵
组合地震
检测
相关
Computer simulation
Correlation methods
Signal detection
Signal processing
Signal to noise ratio
