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海洋多道地震拖缆数据采集包设计

Yang ZHOU,Xiao-dong XIONG,Yan-liang PEI,Guang-ming KAN,Yan-hong LIAN,Ai-ping WU

Marine Sciences（2018）

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Abstract
针对海洋地震信号幅度小、动态范围大、噪声干扰强等特点,设计了基于高精度32位Δ-Σ(Sigma-Delta)模数转换器(ADC)的海洋多道地震拖缆四通道采集包.该地震信号采集包以STM32L432为核心,使用SPI总线控制4片32位模数转换器完成地震信号采集,采用九轴姿态传感器实时监测拖缆姿态,通过RS485接口将地震数据和姿态数据上传到数传包.测试表明:该装置自噪声小、动态范围大、功耗小、运行可靠,对海洋地震勘探高精度信号采集研究具有借鉴意义.
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