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在浅海环境中,海底声学参数对水下声场的精确预报十分重要.现有的海底声学参数反演方法大多数是采用固定垂直阵进行的,其缺点是不能实施大面积、高分辨的走航式反演.在已提出的垂直阵海底反射损失反演方法的基础上,研究了基于三种线列阵阵形的海底反射损失提取方法及其特点,提出了基于拖曳倾斜线列阵与三个声源组合的走航式海底参数快速获取方法,并对该方法进行了误差分析.研究结果表明:覆盖同样的掠射角范围,垂直线列阵需与多个距离的声源组合,拖曳水平线列阵只需一个声源组合但需要采用较大的物理孔径,拖曳倾斜线列阵综合了垂直阵和水平阵的优点,它与三个声源的组合,只需采用较小的物理孔径,就可实现海底声学参数的走航式、高分辨反演.
In shallow sea environment, the acoustic parameters of underwater seabed are very important for the accurate prediction of underwater sound field.The existing seabed acoustic parameters inversion methods are mostly carried out by fixed vertical array, and the disadvantage is that it can not implement large-area and high-resolution navigation Based on the proposed inversion method of vertical array seafloor reflection loss, the method of extracting seafloor reflection loss based on three linear array patterns and its characteristics are studied. Based on the towed oblique line array array and three And the error analysis is carried out.The results show that the vertical line array needs to be combined with multiple distance sound sources to cover the same grazing angle range and the drag The horizontal line array requires only one sound source combination but requires a larger physical aperture. The towed oblique line array combines the advantages of a vertical array and a horizontal array with the combination of three sound sources, requiring only a smaller physical aperture , You can achieve the seabed acoustic parameters of navigation, high-resolution inversion.