相控可控震源系统扫描模块设计

The Design of Sweep Module in Phased Array of Vibroseis System

相控可控震源采用雷达相控阵技术,通过控制各震源扫描信号的初始相位,可实现相控地震。分析了系统对扫描信号的要求,给出基于直接数字合成(DDS)的扫描模块的设计,提出用延时和直接控制初始相位的方法实现地震波定向。最后,给出了该模块在系统中的技术指标。

Stated a beam-forming means of seismic wave by the technique of phased array. According to the demand of sweep signals, given the design of sweep module based on direct digital synthesis. In order to realize a beamed seismic wave, put forward the method of time-delay and controlling the beginning phase. At last, the characteristics of the module in vibroseis system are shown.