针对当前水中敷瓦目标高频时域回波预报方法计算量大、速度慢的问题，本文建立基于修正亮点模型的时域回波快速预报方法，通过多层弹性介质声传播理论获取声学覆盖层的反透射系数幅值及相位，由修正亮点模型（HL）理论获得目标总的声散射传递函数，进而采用频域间接法得到目标时域回波信号，并与板块元法（PEM）的计算结果以及刚性目标的时域回波进行对比。研究结果表明，基于修正亮点模型的时域回波预报方法，能够快速、准确地预报敷瓦目标的回波信号，反映目标不同部位几何参数的影响特征，实现对敷瓦水下航行体时域回波的实时预报，具有重要的工程参考价值。
To address the computational inefficiencies in current high-frequency time-domain echo prediction methods for underwater anechoic tile-covered targets, this paper presents a fast prediction method based on a modified highlight model (HL). The method utilizes the theory of sound propagation in multi-layer elastic media to calculate the amplitude and phase of the reflection-transmission coefficient of the acoustic covering layer. The acoustic scattering transfer function of the target is derived using the modified highlight model. Next, the time-domain echo signal of the target is obtained based on the frequency-domain indirect method and compared with the results from the planar elements method (PEM) as well as the time-domain echo of a rigid target. The results demonstrate that the proposed method can quickly and accurately predict the echo signals of anechoic tile-covered targets, reflecting the influence of geometric parameters from different parts of the target. It enables real-time prediction of the time-domain echoes for underwater vehicles with tile coverings, providing valuable engineering insights.
2025,47(22): 155-159 收稿日期：2025-3-19
DOI：10.3404/j.issn.1672-7649.2025.22.022
分类号：U666
基金项目：国家自然科学基金资助项目 （52201397）；船舶振动噪声重点实验室开放基金资助项目（6142204230709，6142204240202）；湖南省自然科学基金资助项目（2023JJ60544）
作者简介：顾瑞冲（1998 – ），男，硕士研究生，研究方向为水中目标声散射
参考文献：
[1] D'AMICO A, PITTENGER R. A brief history of active sonar[J]. Aquatic Mammals, 2009, 35(4): 426-434.
[2] FOOTE K G. Underwater acoustic technology: review of some recent developments[J]. Oceans, 2008: 1-6.
[3] JIA H, LI X, MENG X. Rigid and elastic acoustic scattering signal separation for underwater target[J]. The journal of the acoustical society of America, 2017, 142(2): 653-665.
[4] 范军, 卓琳凯. 水下目标回波特性计算的图形声学方法[J]. 声学学报, 2006, 31(6): 511-516.
FAN J, ZHUO L K. Graphical acoustics computing method for echo characteristics calculation of underwater targets[J]. ACTA ACUSTICA, 2006, 31(6): 511-516.
[5] 范军, 汤渭霖, 卓琳凯. 声呐目标回声特性预报的板块元方法[J]. 船舶力学, 2012, 16(Z1): 171-180.
FAN J, TANG W L, ZHUO L K. Planar elements method for forecasting the echo characteristics from sonar targets[J]. Journal of Ship Mechanics, 2012, 16(Z1): 171-180.
[6] 薛亚强, 彭子龙, 俞强, 等. 基于Kirchhoff近似与曲面三角形网格的水下目标声散射特性分析[J]. 兵工学报, 2023, 44(8): 2424-2431.
XUE Y Q, PENG Z L, YU Q, et al. Analysis of acoustic scattering characteristics of underwater targets based on kirchhoff approximation and curved triangular mesh[J]. Acta Armamentarii, 2023, 44(8): 2424-2431.
[7] 柴鹏程, 陈昌雄, 刘妍, 等. 水下角反射组合体声散射特性[J]. 中国舰船研究, 2023, 18(5): 83-91.
CHAI P CH, CHEN CH X, LIU Y, et al. Acoustic scattering properties of underwater corner reflector complexes[J]. Chinese Journal of Ship Research, 2023, 18(5): 83-91.
[8] 汤渭霖. 声呐目标回波的亮点模型[J]. 声学学报, 1994, 19(2): 93-100.
TANG W L. Highlight model of echoes from sonar targets[J]. Acta Acustica, 1994, 19(2): 93-100.
[9] MENG Z R, SONG Y, YU F X, et al. Highlight model of underwater target acoustic scattering in the bistatic system[J]. Journal of Computers, 2024, 35(2): 231-249.
[10] 刘进伟, 韩林江, 宋昊, 等. 基于分段合成法的水下凸体结构声散射亮点模型[J]. 噪声与振动控制, 2023, 43(4): 54-60.
LIU J W, HAN L J, SONG H, et al. Highlight model of acoustic scattering for underwater convex structures based on segmented synthesis method[J]. Noise and Vibration Control, 2023, 43(4): 54-60.
[11] P. D. JACKINS. Resonance acoustic scattering from stacks of bonded elastic plates[J]. Journal of the Acoustical Society of America, 1986, 80(6): 1762-1776.
