利用渔船噪声矢量场对地声参数的估计

摘要

针对航船噪声实现海底声学参数稳健反演及不确定性分析的问题,研究了联合声压场和矢量场进行可靠地声参数反演的可行性.采用匹配场反演算法对单矢量水听器采集的航船噪声数据进行处理,给出了地声参数的估计值和后验概率分布.理论分析和数值仿真表明:垂直质点振速分量比单独使用声压场能提供更丰富的声信号传输特性;联合声压场和垂直质点振速分量的反演结果比单独处理声压场或垂直质点振速分量具有更高的稳健性和准确性.%Seabed geoacoustic parameters and associated uncertainties are important for sonar performance pre-diction and related applications, and the feasibility of jointly using pressure and vector fields to increase geo-acoustic inversion reliability is discussed. The matching field inversion algorithm is used to process ship noise data collected by a single-vector hydrophone, and the estimation value and posterior probability distribution is derived. Theoretical analysis and a numerical simulation suggest that the component of the vertical particle ve-locity provides more abundant acoustic signal transmission characteristics than when using the acoustic pressure field only, and more consolidated estimates can be obtained through using pressure and vector fields jointly than by treating them individually.