声探测系统防风罩降噪特性研究

Research on Noise Reduction Characteristics of Acoustic Detection System Wind-Caps

选取几种常用的防风罩方案进行防风性能研究,通过在风洞试验室中模拟外场风吹的特点,对比不同防风罩方案的防风性能。对比不同风速条件下的噪声功率,结果表明,长腔体外有毛套型防风罩具有最佳防风效果,相比其他防风方案,噪声功率最大可降低6 dB以上。

In this paper,several common wind shield schemes are selected for wind protection performance research.By simulating the characteristics of wind blowing in the wind tunnel laboratory,the wind protection performance of different wind shield schemes is compared.Comparing the noise power under different wind speeds,the results show that the long cavity wind shield with hair cover has the best wind protection effect,and the noise power can be reduced by more than 6 dB at most compared with other wind protection schemes.