| 一种解决BBADCP测速模糊的方法 |
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| 引用本文： | 黄雄飞,苑秉成,陈喜.一种解决BBADCP测速模糊的方法[J].声学技术,2008,27(3):323-327. |
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| 作者姓名： | 黄雄飞 苑秉成 陈喜 |
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| 作者单位： | 海军工程大学兵器工程系,武汉,430033 |
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| 摘 要： | 宽带声学多普勒海流剖面仪采用重复相位编码信号和复协方差方法进行频移量的估计．具有较高的测速精度，但是在测速上具有速度模糊，在不改变原有的系统结构的基础上对宽带多普勒海流剖面仪的信号处理方法进行改进，提出采用回波自相关的第一个旁瓣的位置解决测速模糊的方法，并推导了计算公式。最后进行了数字计算和仿真。结果证明了这种方法的正确性和可行性。
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| 关 键 词： | 声学 海流剖面仪 相位编码 速度模糊 |
| 收稿时间： | 2007/6/4 0:00:00 |
| 修稿时间： | 2007/9/26 0:00:00 |
A solution to velocity ambiguity of broad band acoustic Doppler current profile |
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| HUANG Xiong-fei,YUAN Bing-cheng and CHEN Xi.A solution to velocity ambiguity of broad band acoustic Doppler current profile[J].Technical Acoustics,2008,27(3):323-327. |
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| Authors: | HUANG Xiong-fei YUAN Bing-cheng and CHEN Xi |
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| Affiliation: | (Naval University of Engineering, Wuhan 430033, China) |
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| Abstract: | Broad-band Acoustic Doppler current profiler （BBADCP） has been used widely in our country, BBADCP adopts phase-coded signal and estimates the Doppler frequency with covariance technology to make it having very high precision but accompanying velocity ambiguity in current velocity measurement. In this paper the method of signal processing is improved without changing the system structure, and the problem of velocity ambiguity is solved by using the location of the first side-lobe of signal＇s auto-corre- lation. The computational formula is induced, and typical computation and simulation is done. The results prove the validity and feasibility of the solution. |
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| Keywords: | acoustic current profile phase-coded confused velocity |
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