利用射线模型快速预报海洋信道对包络谱的影响  

Fast forecasting of ocean channel’s effects on demon spectrum with ray model

作　　者：赵春梅[1,2,3] 徐江[3] 宋俊[3] 

机构地区：[1]中国科学院研究生院,北京100190 [2]中国科学院声学研究所,北京100190 [3]海军装备研究院,北京100161

出　　处：《声学技术》2010年第3期258-263,共6页Technical Acoustics

摘　　要：包络谱是舰船辐射噪声的特征之一,可作为目标识别的重要依据。快速预报海洋信道对包络谱传播的影响,可对目标识别提供帮助。提出并从理论上分析了用射线模型快速预报海洋信道对包络谱影响的方法,利用这种方法计算了几种典型海洋信道中包络谱随接收距离的变化,分析了声速剖面、海底参数、声源和接收深度对包络谱传播的影响。Demon spectrum is one of the characters of ship radiated noise.It can be used as an important basis in target identification.Target identification could be improved if ocean channel’s effects on Demon spectrum propagation can be forecasted quickly.The method of quickly forecasting the effects of ocean channel on Demon spectrum is proposed and analyzed theoretically.Changes of Demon spectrum verses receiving distance in some typical channels are calculated.Effects of sound profile,waterbed parameters,depth of source and receiver on Demon spectrum propagation are ana-lyzed.

关 键 词：射线模型 海洋信道 包络谱 传播 

分 类 号：TB556[理学—物理]