underwater noise meaning in English

水下噪声

Measurement of underwater noise
水下噪声测量
The general research situation of underwater noise caused by ship structure is reviewed from aspects of calculation , experiment and control
摘要从船舶水下结构噪声的计算、实验及其控制方面，回顾了舰船水下结构噪声的研究概况。
Abstract : in this paper ? for real marine underwater noise data by using synchronous acquisition of points ? inputs - output covariance matrix is obtained by filtering ? compensating delay and crosscorrelation . then the contribution of inputs to output in network sense and partial coherence as well as other useful quantities are calculated from the inputs - output covariance matrix
文摘:本文对多点同步测量方法记录的舰艇噪声数据,采取在时域上作滤波、时延补偿和互相关得到输入输出协方差矩阵,然后从输入输出协方差矩阵计算在网络意义和偏相干意义下输入对输出的贡献以及其它有用的量。