摘要
矢量水听器能同时测量声压和质点振速信号,为了对这些信息在海底地声参数反演中加以充分利用,根据声传播理论研究了不同号简正波对声矢量场的影响,并在此基础上提出了一种将声压和质点振速相联合的地声反演方法.理论与实验研究表明,对声压和质点水平振速而言,低号简正波往往占主要贡献,而对于质点垂直振速,高号简正波的贡献更大.海底地声参数反演的数值仿真与实验结果表明,基于矢量水听器阵的地声反演方法可以有效降低海底声学参数反演的不确定性.这为矢量水听器应用于海洋环境监测提供了一种新方法.
Vector sensors can measure particle velocity and pressure simultaneously.To more effectively use the signal recorded with a vector sensor,the influence of different normal modes on vector fields were studied according to propagation theory.A geo-acoustic inversion method was proposed based on a combination of pressure and particle velocity.Theoretical and experimental results showed that lower modes dominate for the horizontal particle velocity and pressure,while higher modes are relatively important for vertical particle velocity.Both simulations and experimental results for geo-inversion showed that the uncertainty of inversion was decreased by a geo-acoustic inversion method based on a vector sensor array.It provides a new method for inspecting the ocean environment with vector sensors.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2010年第7期895-902,共8页
Journal of Harbin Engineering University
基金
国家自然科学基金资助项目(10734100)
关键词
矢量水听器
矢量声场
地声反演
匹配场
vector sensor
vector acoustic field
geo-acoustic inversion
matched field processing（MFP）
