摘要
本文根据我们提出的一种简正波分解快速迭代方法（声学学报待发表），在夏季向下折射的声速剖面环境下，讨论短阵，稀阵和短稀阵三类垂直阵的匹配简正被处理（ＭＭＰ）刊声源距离和深度的定位性能。同时根据迭代方法的特点，提出用简正波分解均方根误差ＲＭＳ值来度量简正波分解的精度。数值模拟计算给出了上述垂直阵匹配场处理和匹配简正波处理两种声源的定位结果。该结果证明简正波分解迭代方法提高了声源距离和深度的定位精度，而且有效地抑止了旁瓣。短稀阵不仅缩短阵长、减少阵元数，而且能适应不同海区深度变化的要求，它是声源被动定位工程实现中可选择的有效阵型。
in this article, using a fast iterative method of mode decomposition, source rangedepthlocalization performnces of matched-mode processing (MMP) for three kinds of vertical array (short,sparse, and short-sparse array) in shallow water with a downward refraction soulld--speed profile ofthe summertime are discussed. According to the characteristic of this method, the accuracy of modedecomposition is measured by its root-mean-square error. The numerical simulated results illustrate thatthe accuracy of source range and depth estimation is raised and the sidelobes are suppressed effectively.The shortrsparse vertical array not only has shorter length and fewer hydrophones, but also can beapplied to dthereni sea areas with variable depth, so it is the optimum type of vertical array in theengineering project of the passive source localization.
出处
《声学学报》
EI
CSCD
北大核心
1996年第6期912-921,共10页
Acta Acustica
