关键词: 勘查技术, 地震勘探, 数据采集, 拖缆

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.

Key words: prospecting technology, seismic survey, data acquisition, streamer