【摘要】 设计了一种基于CPCI总线、二级分布式海洋地震拖缆数据采集与记录系统,包括水下采集与传输系统、船载记录系统。系统的主要特点是单检波器、道间距为3.125m、24位ADC。系统主要指标动态范围为115dB,谐波畸变为-106dB,系统容量支持单缆1920道、1ms采样间隔,可同时连接4缆。系统经过海试,采集了地震数据,绘出了地震剖面图,各项技术指标达到了要求。更多还原

【Abstract】 Paper designs a kind of ocean seismic data acquisition and recording system based on CPCI bus and two-staged distribution architecture.The system includes underwater data sampling and communication subsystem and on shipboard recording subsystem.The main characteristic is single hydrophone,3.125m channel distance and 24 bit ADC.Its dynamic range achieves 115 dB,THD-106 dB.It supports 1920 channels per cable,1ms sampling interval,connecting 4 streamers at one time.The system has been tested on the sea,it could collect seismic data,plot a profile graph,achieved all technical target.This is the first near ten thousand channels ocean seismic survey equipment which China owns the intellectual property.更多还原