线谱声源随机运动和随机海洋信道引起的非相干散射  

Non-coherence scattering caused by random move of sound source with line spectrum and random ocean sound channels

作　　者：蒋国健[1] 沈瑞喜 林建恒[1] 马杰[1] 

机构地区：[1]中国科学院声学所北海站

出　　处：《声学学报》1996年第6期898-904,共7页Acta Acustica

摘　　要：本文采用广义相干函数和广义散射函数的概念探讨线谱声源随机运动和随机海洋声信道引起的非相干散射，指出接收点的散射函数是线谱辐射过程时空过滤函数和随机海洋声信道散射函数的卷积。文中分别给出了声源随机运动和海洋信道随机时延引起的空间频率谱扩展。The non-coherence Scattering due to random move of sound source with line spectrum andrandom ocean sound channels is discussed by means of generalized coherence and scattering fUnction. Itis shown that the scattering function of the receiver is the convolution of timesspace filtering function ofline spectrum radiation and scattering function of random ocean sound channels. The space-frequencyspectrum expanding caused repectively by random movement of sound source and random delay of oceansound channels is given in this paper.

关 键 词：随机海洋信道 线谱声源 海洋声学 非相干 散射 

分 类 号：P733.21[天文地球—物理海洋学]