浅层地震可控震源系统的设计

The Development of Shallow Seismic Vibrator System

轻便浅层地震可控震源是一种用于探测和浅层地震勘探的激震设备 ,其主要作用是根据参数输出严格控制的Chirp信号。本文系统地阐述了轻便浅层地震可控震源的工作原理、系统构成及技术特点等 ,并针对野外浅层地震勘探的特点和要求 ,进一步探讨了基于直接数字合成 (DDS)的任意波形发生器 (AWG)的设计。

The Shallow Seismic Vibrator System(SSVS) is a kind of vibration source for engineering detection and shallow seismic survey. Main fun ction of SSVS is to generate a Chirp signal with strictly controlled parameters . The working principle , constitution and technical features of SSVS are studied systematically . According to the characteristic and demand of the field shallow - layer seismic exploration , further more the design of arbitrary waveform generat or (AWG) based on direct digital synthesis (DDS) and the real time control of sweep signal are discussed .