垂直长基线阵被动目标定位的缩比试验

Scaling Experimental Design of Deep-Sea Passive Localization Based on Vertical Linear Array in Anechoic Tank

在水文条件优良的深海中垂直布放长基线阵实施被动目标定位具有重大意义,但限于现有设备的结构耐压性、布放难度等条件的限制,海试难以实施。消声水池具有与深海类似的声场环境,可以在消声水池中利用短基线阵实施缩比模拟试验。首先分析论证了影响目标定位精度的两个关键参数(时延估计精度和阵元间距)的设置,为深海垂直长基线阵和水池缩比试验平台的设计提供参考;然后给出了试验平台设计、试验步骤及试验数据处理分析方法;最后利用消声水池试验数据对深海中垂直长基线阵的目标定位精度、作用距离等指标做出了性能预报。

Anechoic tank can provide similar acoustic environments to simulate deep-sea behav- iors, which makes it feasible for the experiments using shorter linear array in anechoic tank. Firstly, the setting of two crucial parameters, i. e. , the precision of time delay estimation and the array aperture, are demonstrated to provide reference for the design of vertical linear array and tank similar experiment platform. Secondly, an experiment is carried out and the method for processing experiment data are presented. Finally, according to the experimental data, it forecasts the localization precision and effective distance performance of vertical linear array de ployed in deep-sea.