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来自水下目标的分散声场的积极控制方法
Manjie Mei1, Lihong Zhang2, Buchao An3
1College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, 310027, China.
The Journal of the Acoustical Society of America
|November 1, 2023
概括
这项研究提出了一种新的方法,通过使用单个全息面控制分散的声场来控制水下目标的声学隐形. 这种方法显著降低了水声机的要求和噪声,提高了目标检测避免率.
科学领域:
- 声学 声学 在声学方面
- 水下声学 水下声学
- 隐形技术是一种隐形技术.
背景情况:
- 积极控制分散的声场对于水下声学隐形至关重要.
- 现有的方法往往需要大量的水声机和复杂的设置.
- 尽量减少声学信号对于逃避检测至关重要.
研究的目的:
- 开发一种有效的方法来控制水下目标的分散声场.
- 为了减少声学隐形所需的水声机的数量.
- 通过模拟和实验验证拟议的控制策略.
主要方法:
- 一种声音场分离技术,使用单个全息面测量来隔离分散的场.
- 两种控制策略,以最大限度地减少从特定方向的二次源辐射的声音功率.
- 有限元素方法模拟和无声坦克实验用于验证.
主要成果:
- 拟议的方法有效地提取了目标附近的分散声场.
- 实验结果表明,在2kHz的远场分散声压水平下降至少10dB.
- 实时控制系统在减少声学信号方面被证明是有效的.
结论:
- 单一全息表面方法为水下声学隐形提供了分散声场的积极控制的重大进步.
- 这种方法提供了一个实用和高效的解决方案,降低了硬件要求.
- 经过验证的技术增强了水下平台的隐形能力.
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