用于海洋地震勘探的数字包设计与实现  

Design and Realization of Digitizer for Marine Seismic Exploration

作　　者：吴增海[1,2] 宋克柱[1,2] 曹平[1,2] 

机构地区：[1]中国科学院核探测与核电子学国家重点实验室,合肥230026 [2]中国科学技术大学近代物理系,合肥230026

出　　处：《数据采集与处理》2013年第2期250-256,共7页Journal of Data Acquisition and Processing

基　　金：国家高技术研究发展计划("八六三"计划)(2006AA09A102-02)资助项目

摘　　要：提出了一种高精度、高性能的用于海洋地震勘探的拖缆数字包,并给出其设计与实现。每个数字包含有16个数据采集通道,每个通道都可以直接连接水听器,而水听器产生的模拟信号被由FPGA控制的24-bit高精度Δ-ΣADC实时采集。同时,基于串行并发总线结构,设计和实现了系统的实时控制和远距离数据传输与同步。测试结果表明:该拖缆数字包满足海洋地震勘探的要求。A reliable high-prec seismic exploration is propose ision and high-performance streamer cable digitizer for marine d. In the precise digitizer, there are total 16 data acquisition channels, each of which can be connected to hydrophones directly. Analog signals are digitized by 24-bit high precise △-∑; ADCs controlled by field programmable gate array （FPGA） in real time. Schemes of real time system control and remote synchronization are also well designed and realized in the digitizer based on the architecture of serial concurrent bus which is imple-mented by FPGA. The results indicate that the digitizer can meet the requirements of marine seismic exploration.

关 键 词：海洋地震勘探 数据采集 现场可编程门阵列 动态范围 总谐波失真 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]