Influence Analysis and Vibration Restraint Solutions Research on the Underwater Acoustic Monitoring System  

作　　者：WANG Zhen ZHENG Yi MAO Yu-feng HE Chuan-lin GONG Jin-long HAO Zong-rui 

机构地区：[1]Institute of Oceanographic Instrumentation,Qilu University of Technology(Shandong Academy of Sciences),Qingdao 266061,China [2]Shandong Provincial Key Laboratory of Ocean Environmental Monitoring Technology,Qingdao 266061,China [3]National Engineering and Technological Research Center of Marine Monitoring Equipment,Qingdao 266061,China

出　　处：《China Ocean Engineering》2020年第5期718-729,共12页中国海洋工程（英文版）

基　　金：financially supported by the Key Research and Development Plan (Public) Project of Shandong Province (Grant No.2019GHY112042);the International Science and Technology Cooperation Project of Shandong Academy of Sciences (Grant No. 2019GHZD01)。

摘　　要：In order to reduce the hydrodynamic and structural influences on the detection accuracy especially in the very-lowfrequency range, some vibration restraint methods are raised, which are the wrapped fairing improvement, the floating body shape improvement and the cable vibration reduction treatment. Through the improvement analysis and experimental comparison, the final treatments are proposed, namely the multilayer wrapped fairing structure with composite materials, the floating body with NACA0024 airfoil section and X-shape tail spoiler, as well as the brush cable. The sea test is carried out to evaluate the vibration restraint effect. Through comparison of the responses to the ocean ambient noise and the direction of arrival(DOA) estimations with the same underwater transmitting transducer, the results indicate that the horizontal floating platform with vibration restraint treatment has obvious flow resisting effect especially in low frequency range and more accurate DOA estimation.

关 键 词：hydrodynamic interference vibration restraint FAIRING DOA estimation computational fluid dynamics 

分 类 号：P716[天文地球—海洋科学]