本文選題：海洋觀測流速波浪儀 + ADCP　； 參考：《華東理工大學(xué)》2015年碩士論文

【摘要】：海洋等水體的運動及在海面發(fā)生的蒸汽是影響全球氣候變化的重要因素,不斷監(jiān)測海流的變化,對隨時掌握自然界的變化規(guī)律具有重要的意義。 本文首先介紹了多普勒測流技術(shù)在國內(nèi)外的研究現(xiàn)狀及多普勒測流相關(guān)技術(shù)。其次根據(jù)對海底海流剖面流速,海面波浪,海水懸浮泥沙進行檢測的要求,介紹了一種基于多普勒測流技術(shù)的海洋觀測流速波浪儀的設(shè)計,包括該波浪儀的系統(tǒng)的組成和軟件總體設(shè)計。 本文重點研究了海洋觀測流速波浪儀的相關(guān)降噪技術(shù),包括接收部件的降噪電路設(shè)計,在寬帶測流中采用改進的復(fù)相關(guān)測頻算法對回波信號測頻,并人為地對水流進行分層流速轉(zhuǎn)換,以及引入平滑算法對測流數(shù)據(jù)進行降噪處理等。 軟件仿真和設(shè)備水下實驗驗證了本文所設(shè)計的海洋觀測流速波浪儀測量精度滿足設(shè)計指標(biāo)的要求。本文所提出的方法對后續(xù)的聲學(xué)多普勒流速剖面儀(ADCP)系統(tǒng)研制有一定的參考價值。
[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.
【學(xué)位授予單位】：華東理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P716.22

【參考文獻】

相關(guān)博士學(xué)位論文 前1條

1 劉德鑄;聲學(xué)多普勒流速測量關(guān)鍵技術(shù)研究[D];哈爾濱工程大學(xué);2010年

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本文編號：1924892