拖曳阵声呐减振降噪方法的研究

Research on Vibration and Noise Reduction Method of Towed Array Sonar

为有效提高拖曳阵声呐监测信号的准确性,提升拖曳阵声呐系统的性能,必须对拖曳自噪声进行抑制。拖缆运动时由湍流边界层脉动压力产生的噪声和自身的振动噪声是拖曳自噪声的主要来源。在分析传统导流套拖曳减振降噪方法缺点的基础上,介绍了一种通过在拖缆外增加一层纤维飘带进行拖曳减振的新型降噪方法。该方法在拖缆表面采用编织的形式植入一层纤维飘带,可以减少拖缆在行进过程中与水流的相互作用,从而降低拖缆振动,减少噪声。经过用户实际使用,该方法使用便捷,稳定性好,降噪效果明显。

In order to effectively improve the accuracy of towed array sonar monitoring signal and the performance of towed array sonar system,it is necessary to suppress the towing self-noise.The noise produced by fluctuating pressure in turbulent boundary layer and the self vibration noise of the towed cable during motion are the main sources of towing self-noise.Thus based on the analysis of the shortcomings of the traditional towing vibration and noise reduction method of diversion sleeve,a new towing vibration and noise reduction method of braided fiber streamers is developed.By inserting a layer of fiber streamers outside the towed cable,the method effectively reduces the interaction between the towed cable and the water flow in the course of traveling,reduces the vibration of the towed cable and reduces the towing self-noise.After the actual use of users,the method is convenient to use,has good stability and obvious noise reduction effect.