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| Effect of background current on ADCP wave estimation based on BP neural network molel |
| Zheng Wei,Yang Ying,Zhao Bin,Hui Li,Lu Chengjie,Yang Shukai |
| The Institute of Oceanographic Instrumentation,Shandong Academy of Sciences,Shandong Key Laboratory of Ocean Environmental Monitoring Technology,Qingdao 266001 |
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Abstract ADCP wave estimation is carried out by using current velocity closed to water surface,and the only wave induced velocity is needed during wave estimation.When background current is strong,wave estimation accuracy is affected by background current.The software WAVESMON suggests that background current correction should be done if background current amplitude is larger than 0.75m/s.The research shows that when background current exists,the factors of background current amplitude,background current direction,wave direction and water depth can affect wave estimation.And the present background current correction algorithm is not accurate.This paper applies BP neural network model in wave estimation when background current exists.And the relationship between wave estimation error and various factors are analyzed,which can improve wave estimation accuracy.
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Received: 21 April 2017
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| [1] |
DALLY W R,OSIECKI D A.Comparison of deep-water ADCP and NDBC buoy measurements to hindcast parameters[J].Proceedings of International Workshop on Wave Hindcasting and Forecasting,2004:12-16.
|
| [2] |
WORK P A.Nearshore directional wave measurements by surface-following buoy and acoustic Doppler current profiler[J].Ocean Engineering,2008,35(8):727-737.
|
| [3] |
郑威.基于ADCP测流的方向谱估计技术研究[D],哈尔滨:哈尔滨工程大学,2013.
|
| [4] |
TERRAY E A,BRUMLEY B H,STRONG B.Measuring waves and currents with an upward-looking ADCP[C]// Current Measurement,1999.Proceedings of the IEEE Sixth Working Conference on.IEEE,1999:66-71.
|
| [5] |
杨茜.BP神经网络预测方法的改进及其在隧道长期沉降预测中的应用[J].北京工业大学学报,2011,37(01):92-97.
|
| [6] |
崔东文.多隐含层BP神经网络模型在径流预测中的应用[J].水文,2013,33(01):68-73.
|
|
|
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2017, Vol. 34 
