海洋观测波浪仪的设计与实现

发布时间：2018-05-23 13:20

本文选题：海洋观测流速波浪仪 + ADCP　；参考：《华东理工大学》2015年硕士论文

【摘要】：海洋等水体的运动及在海面发生的蒸汽是影响全球气候变化的重要因素,不断监测海流的变化,对随时掌握自然界的变化规律具有重要的意义。本文首先介绍了多普勒测流技术在国内外的研究现状及多普勒测流相关技术。其次根据对海底海流剖面流速,海面波浪,海水悬浮泥沙进行检测的要求,介绍了一种基于多普勒测流技术的海洋观测流速波浪仪的设计,包括该波浪仪的系统的组成和软件总体设计。本文重点研究了海洋观测流速波浪仪的相关降噪技术,包括接收部件的降噪电路设计,在宽带测流中采用改进的复相关测频算法对回波信号测频,并人为地对水流进行分层流速转换,以及引入平滑算法对测流数据进行降噪处理等。软件仿真和设备水下实验验证了本文所设计的海洋观测流速波浪仪测量精度满足设计指标的要求。本文所提出的方法对后续的声学多普勒流速剖面仪(ADCP)系统研制有一定的参考价值。
[Abstract]:The movement of the ocean and other water bodies and the steam occurring on the sea surface are the important factors that affect the global climate change. It is important to constantly monitor the changes of the current in order to grasp the changing law of the nature at any time. In this paper, the current situation of Doppler current measurement and the related Doppler current measurement technology at home and abroad are introduced. Secondly, according to the requirements of detecting the velocity of ocean current profile, sea surface wave and suspended sediment, this paper introduces the design of a wave meter for ocean observation velocity based on Doppler current measurement technology. Including the system composition of the wave meter and the overall software design. In this paper, the related noise reduction techniques of ocean current wave meter are studied, including the design of the noise reduction circuit of the receiver, and the frequency measurement of the echo signal by using the improved complex correlation frequency measurement algorithm in the broadband current measurement. The stratified flow velocity is converted artificially, and the smoothing algorithm is introduced to deal with the noise of the flow measurement data. The software simulation and underwater experiment verify that the precision of the ocean current wave meter designed in this paper can meet the requirements of the design index. The method presented in this paper has some reference value for the subsequent development of the acoustic Doppler velocity profiler (ADCP) system.
【学位授予单位】：华东理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P716.22

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