水下非正交声学角反射器声散射特性研究

谢涛涛; 罗 祎; 肖大为

doi:10.11993/j.issn.2096-3920.2022.01.012

水下非正交声学角反射器声散射特性研究

doi: 10.11993/j.issn.2096-3920.2022.01.012

海军工程大学兵器工程学院, 湖北武汉, 430033

详细信息

作者简介:
谢涛涛(1995-), 男, 硕士, 主要研究方向为兵器工程.

中图分类号: TJ630 TB566
计量
- 文章访问数: 60
- HTML全文浏览量: 0
- PDF下载量: 25
- 被引次数: 0
出版历程
- 收稿日期: 2020-08-14
- 修回日期: 2021-03-29
- 刊出日期: 2022-02-28

Analysis of Acoustic Scattering Characteristics of Underwater Non Orthogonal Acoustic Corner Reflectors

College of Weaponry Engineering, Naval University of Engineering, Wuhan 430033, China

摘要

摘要: 水下角反射器具有较强的远场声散射特性, 由于存在生产装配误差, 标准正交金属角反射器无法满足各板面绝对垂直, 生产误差是。文中研究非正交角反射器的声散射特性, 利用夹逼定理思想改变标准角反射器平板之间的夹角为°、85°和0°, 并进行定性分析采用结构建模软件NSYS依次对非正交二面角、三面角反射器进行模型构建及网格划分再利用声学仿真软件YSNOISE根据结构有限元+流体边界元的方法对其远场声散射特性进行仿真, 并与标准正交角反射器在相同的载荷条件与声场条件下的声散射特性进行对比, 得到声波不同入射角度下的目标声散射强度随入射声波频率变化规律。仿真结果表明, 正交角反射器声散射特性优于非正交角反射器, 正交二面角反射器优于三面角反射器, 二面角反射器生产误差在°以内不会对声散射特性造成实质性影响。
- 水下角反射器 /
- 生产误差 /
- 结构有限元 /
- 流体边界元 /
- 声散射 /
- 目标强度
Abstract: Underwater corner reflectors possess strong far-field acoustic scattering characteristics, and because of the assembly error, the standard orthogonal metal corner reflector cannot meet the absolute vertical of each plate. The production error is an important factor that affects the sound scattering characteristics of corner reflectors. The acoustic scattering characteristics of non-orthogonal corner reflectors were studied. The pinch theorem idea was used to change the angle between standard corner reflectors (90°, 85°, and 80°), and a qualitative analysis was performed. The structural modeling software ANSYS was used to model and mesh the non-orthogonal dihedral and trihedral corner reflectors. The acoustic simulation software SYSNOISE was used to analyze the acoustic scattering characteristics of non-orthogonal dihedral and trihedral corner reflectors. Furthermore, far-field acoustic scattering characteristics were simulated and analyzed by the structural finite element and fluid boundary element methods. The acoustic scattering characteristics were compared with standard orthogonal corner reflectors under similar loading and acoustic field conditions. The acoustic scattering intensity of the target under different incident angles of sound waves and variation law of the target intensity with the frequency of the incident sound waves were obtained. The results showed that the acoustic scattering characteristics of orthogonal corner and orthogonal dihedral corner reflectors were better than those of non-orthogonal corner and trihedral corner reflectors, respectively. The production error of the dihedral corner reflector was less than 2° and will not have a substantial impact on the acoustic scattering characteristics.
- underwater corner reflector /
- production error /
- structural finite element method /
- fluid boundary element method /
- acoustic scattering /
- target strength

HTML全文

参考文献(12)

[1]	汤广富, 李华, 甘荣兵, 等. 海战场环境下角反射器干扰分析[J]. 电子信息对抗技术, 2015, 30(5): 39-45, 84. Tang Guang-fu, Li Hua, Gan Rong-bing, et al. Analysis of Corner Reflector Under Naval Battle Field[J]. Electronic Warfare Technology, 2015, 30(5): 39-45, 84.
[2]	张志远, 赵原源. 新型二十面体三角形角反射器的电磁散射特性分析[J]. 指挥控制与仿真, 2018, 274(4): 138-142. Zhang Zhi-yuan, Zhao Yuan-yuan. Analysis of Electro-magnetic Scattering Characteristic for New TypeIcosahedrons Triangular Trihedral Corner[J]. Command Control & Simulation, 2018, 274(4): 138-142.
[3]	赵虎辰. 一种X波段全向雷达角反射器阵列设计[J]. 河北省科学院学报, 2019, 36(1): 30-33. Zhao Hu-chen. Design of an X-Band Omnidirectional Radar Angular Reflector Array[J]. Journal of the Hebei Academy of Sciences, 2019, 36(1): 30-33.
[4]	徐海珠, 袁延艺, 刘雄厚, 等. 线阵声诱饵对抗智能鱼雷尺度识别效果分析[J]. 舰船科学技术, 2017, 39(5): 135-138. Xu Hai-zhu, Yuan Yan-yi, Liu Xiong-hou, et al. On Performance Analysis of Linear Array Decoy in Confronting Smart Torpedo[J]. Ship Science and Technology, 2017, 39(5): 135-138.
[5]	陈建青, 赵俊杰. 一种尺度目标模拟器的模拟逼真度分析[J]. 鱼雷技术, 2014, 22(6): 442-446. Chen Jian-qing, Zhao Jun-jie. Fidelity Analysis of a Scale Target Simulator[J]. Torpedo Technology, 2014, 22(6): 442-446.
[6]	罗祎, 文无敌, 陈鑫．一种水下目标尺度特征无源模拟优化方法[J]．海军工程大学学报, 2018, 30(1): 98-102． Luo Yi, Wen Wu-di, Chen Xin. A Passive Simulating Optimization Method of Measure Characteristic of Underwater Object[J]. Journal of Naval University of Engineering, 2018, 30(1): 98-102．
[7]	毕亚峰, 贾晗, 杨军. 基于变换声学的角反射器的设计[J]. 应用声学, 2019, 38(1): 52-57. Bi Ya-feng, Jia Han, Yang Jun. The Design of Acoustical Corner Reflector Based on Transformation Acoustics[J]. Applied Acoustics, 2019, 38(1): 52-57.
[8]	张小凤, 赵俊渭, 王尚斌, 等. 水下物理目标声反射器研究[J]. 兵工学报, 2004, 25(5): 600-603. Zhang Xiao-feng, Zhao Jun-wei, Wang Shang-bin, et al. A Study on Underwater Passive Sound Reflectors[J]. Acta Armamentarii, 2004, 25(5): 600-603.
[9]	魏克难, 李威, 雷明, 等. 基于耦合边界元法的水下目标低频声散射特性[J]. 舰船科学技术, 2014, 36(10): 32- 36. Wei Ke-nan, Li Wei, Lei Ming, et al. The Low-frequency Acoustic Scattering Characteristics Study on Underwater Targets by the Coupled Boundary Element Method[J]. Ship Science and Technology, 2014, 36(10): 32-36.
[10]	Zeidan N I. GNSS Receivers for Weak Signals[A]. The GNSS Technology and Applications Series[M]. 1rd ed. London, UK: Artech House, 2006.
[11]	陈鑫, 罗祎. 水下刚性角反射器散射特性[J]. 声学技术, 2019, 38(3): 278-283. Chen Xin, Luo Yi. Acoustic Scattering Characteristics of Underwater Rigid Corner Reflector[J]. Technical Acoustics, 2019, 38(3): 278-283.
[12]	陈鑫, 罗祎, 李爱华. 水下弹性角反射器声散射特性[J]. 兵工学报, 2018, 39(11): 2236-2242. Chen Xin, Luo Yi, Li Ai-hua. Acoustic Scattering Characteristics of Underwater Elastic Corner Reflectors[J]. Acta Armamentarii, 2018, 39(11): 2236-2242.