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前言海流是海洋水文的主要要素之一,海流的测量是近海和远洋调查的重要内容。自从1905年制造出厄克曼海流计以来,经过七十多年的历史,测流仪器巳经发展到四十余种。声学海流计是近代发展起来的一种新型仪器。由于声学海流计具有不破坏流场,可测瞬时流,能自动校准,能获得高精度,能测低流速等机械转子式海流计所不具备的优点,所以自从它出现之后,许多国家都很重视。近几年来,国内也有若干单位开始了这方面仪器的研制。本文对国内外有关声学测流仪器的资料进行综合分析,并对某些问题进行探讨,仅供有关方面参考。
Preface Ocean currents are one of the major elements of ocean hydrology. The measurement of ocean currents is an important part of offshore and oceanographic investigations. Since the manufacture of the Ekman Sea-Flow Meter in 1905, after more than 70 years of history, the current-measuring instruments have grown to more than 40 species. Acoustic current meter is a new type of instrument developed in modern times. Because acoustic flow meters have the advantage of not disrupting the flow field, measuring instantaneous flow, being able to be automatically calibrated, obtaining high accuracy, and measuring low flow rates, the mechanical rotor-type flow meters do not have the advantages that many countries have since it appeared Pay attention. In recent years, there are a number of units in China that started the development of instruments in this area. In this paper, a comprehensive analysis of the data of acoustic flow measurement instruments at home and abroad, and some of the issues discussed, for reference purposes only.