摘要
介绍了矢量水听器的测量模型及噪声声强测量原理。针对在消声水池对矢量水听器测量系统和传统声压水听器测量系统进行的比对测量,检测了系统的整体测试性能,分析比较了各自获得的信噪比情况,验证了矢量水听器测量系统的无指向性特性。水池试验表明,矢量水听器测量系统能显著抑制各向同性噪声,提高测量系统信噪比,可用于低噪声舰船辐射噪声的测量。
Measurement model and measurement principle of vector hydrophone are introduced. For comparing vector hydrophonc measurement system with common sound pressure hydrophone measurement system,test was made in noise elimination pool. The performance of vector hydrophone measurement system was detected,the signal-noise ratio of two system was analyzed and compared, non-directivity of vector hydrophone was validated. The pool test indicates： vector hydrophone measurement system can markedly restrain isotropic noise and improve signal-noise ratio,it can be used for radiation noise measuring of low noise ship.
出处
《科技资讯》
2009年第3期45-46,共2页
Science & Technology Information
关键词
矢量水听器
噪声
声强
信噪比
vector hydrophone
noise
acoustic intensity
signal-noise ratio
