声学系统信号的量化与数字化处理

Quantification And Digitization of Signals of Acoustic System

声学系统是探测悬浮颗粒物在海洋中的短期时空分布状态,揭示悬浮颗粒物的沉降、扩散和迁移特性的有效工具。本文阐述了声学系统信号与悬浮颗粒浓度的量化(以美国Datasonics声学系统为例)及信号数字化处理。用处理后的数据可定量分析海洋中悬浮颗粒物时空分布以及不同密度层和水团的分布,可供从事物理海洋学方面的研究。文中阐述的声学信号处理方法对在海洋调查研究、海洋环境保护研究和海洋环境监测中声学技术的应用可提供一个借鉴。

The acoustic system is an effective tool for determining the short- term time-space distribution of suspended matter in ocean, as well as for revealing its sedimentation, dispersion and transportation charac - teristics. The quantification of the signals of acoustic system' and the concentration of the suspended matter, as well as the digitilization of the signals are described in this paper, taking the Datasonics acoustic system as an example, The processed data can be used for quantitative analysis of the time-space distribution of the suspended matter and the the water mass on layers with different densities.They also can be us- ed for physical oceanographic research work,The methods described in this paper can be adopted as a reference for the acoustic application in oceanographic studies,in environmental protection and monitoring.