舰船噪声不同窄带包络间相关  

Envelopes correlation between different narrow-band filtered ship noise

作　　者：蒋国健[1] 马杰[1] 林建恒[1] 陈希信 常道庆[1] 李学军[1] 蒋宇伦 

机构地区：[1]中国科学院声学所北海站,青岛266023 [2]北京长城无线电厂

出　　处：《声学学报》2002年第5期425-428,共4页Acta Acustica

摘　　要：给出了舰船噪声不同中心频率窄带包络间相关系数（频间包络相关）R和滤波中心频率差值（频差）△fni、起始滤波中心频率fn的值、滤波带宽△f以及时延τ的关系,并和海洋环境噪声的R～△fni曲线进行了比较。结果表明,舰船噪声频间包络相关和海洋环境噪声频间包络相关有显著差异。The relationship among the narrow-band envelopes correlation coefficient (Frequency-envelopes correlation) of ship noise, R, the mid-frequency difference △fni of filter, the initial filter mid-frequency fn, the filter pass-band △f and the time-delay τ is presented. The relation curves mentioned above are compared with the R - △fni curve of sea ambient noise. It is shown that there exists significant difference between the frenquecy-envelopes correlations of ship noise and sea ambient noise.

关 键 词：舰船噪声 窄带包络 相关性 无源声呐 海洋环境噪声 

分 类 号：TB56[交通运输工程—水声工程]