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水声换能器基阵信号采集系统优化设计 被引量:45

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摘要 水声换能器的信号采集系统是实现换能器频谱分析、数据记录或信号源产生的关键。传统的信号采集采用基于VXI和PXI总线实时数据记录软件实现,实时性、准确性不好。提出一种基于阻抗匹配与功率激励的水声换能器基阵信号采集系统设计方案。通过引入阻抗匹配与功率激励方案,提高换能器回波微弱差异信息的能量增益,去除检测仪电路中耦合噪声。仿真结果表明,系统具有较高的稳定性,抗干扰能力较强,实现对水声换能器基阵信号准确实时采集,为提高对水下目标信号的搜索和识别能力奠定基础。
出处 《物联网技术》 2015年第4期36-37,41,共3页 Internet of things technologies
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