舰船尾流侧向声检测方法

舰船尾流声检测是水下航行体实现自动搜索、跟踪、攻击水面舰艇目标的最有效途径之一,当前工程应用和相关研究主要集中于从尾流下方实施的顶视声尾流检测方法.为了进一步研究水下航行体新型尾流检测技术,提高尾流自导性能及抗干扰能力,研究了舰船尾流的侧向声散射检测方法.分析了舰船尾流的几何特性和声特性,进行了实验室模拟尾流的气幕声散...

A study of ships wake detection by side acoustic scattering

Ship wake acoustic detection is one of the most effective ways for underwater vehicle to automatically search,track and attack surface targets.The present engineering applications and research mainly focus on the top view sonar detection under the wake.In order to further develop new wake detection methods for underwater vehicle to improve the performance of wake homing and enhance the capacity of anti-interference,the method of wake detection by side acoustic scattering is studied in this paper.The acoustic characteristics and physical property of ship wake are dis-cussed.The acoustic scattering characteristics of wake gas bubbles are researched in laboratory with simulated wake by air bubble screen.Simultaneously,the experiments of wake detection by side acoustic scattering are carried out with actual wake of large ship in lake.The experiments results indicate that the actual ship wake can be continuously and ef-fectively detected by side acoustic scattering detection,which provides a novel and feasible method for surface ship wake detection.The research results could be the important foundation for the development of the new wake homing technique and the effective surface target tracking and attacking of underwater vehicles.They are useful and significant for practical engineering applications.