【摘要】 在地震勘探生产中,与传统的炸药激发地震波信号相比,可控震源具备更高的安全性、低公害性和在大多数地区作业效率高等明显的技术优势,因此成为重要的地震波激发手段。在全球的地震勘探活动中,越来越多的地震数据采集都要求使用可控震源激发。理论上,可控震源采用的是有限带宽的扫描信号,而炸药震源使用的则是无限带宽的脉冲信号,因此在解决具体地质问题时,会因为激发频带宽的问题,导致对目标的分辨力产生差异。本文通过探讨可控震源高频输出信号的约束条件,提出改进输出信号品质的途径和方法,同时也指出了应用中的注意事项。更多还原

【Abstract】 Comparing with traditional dynamite source,the vibroseis have already become an important choice of energy source for seismic prospecting because of its more safety,lower hazards and higher productivity in the most available terrains.More and more seismic data acquisition activity uses vibroseis for shooting in globe seismic prospecting.Theoretically,vibrator sweep is a frequency band limited signal,and dynamite is an impulse signal that knows as an infinite bandwidth signal.The different resolution will be produced because of the sweep bandwidth when solving the practical geological target.The paper presented the methods improving the quality of data by discussing the constraint conditions of high-frequency output signal in vibroseis and pointed out the matters needing attention in application.更多还原