摘要
三维地震模型实验系统主要包括三维坐标自动控制、高速数据采集、超声脉冲或可变频正弦信号发射等装置。着重研究了三维坐标自动控制和高速数据采集。使用变频与等效采样技术,解决了坐标系统的运行精度及超高速数据采集的问题,其中等效采样技术也适合于雷达、声纳信号的采集。
D seismic modeling experiment system mainly includes 3D auto control scanning, high speed sampling, ultrasonic pulse or varying frequency signal emitting ,etc., among which 3D auto control scanning and high speed sampling are the most important parts. This paper studies these two aspects in detail. Frequency changing and equivalent sampling were applied to solve the running accuracy of the scanning system and the problem of very high speed sampling. Equivalent sampling technique can also be applied to the acquisition of Radar and Sonar signals.