图像声纳换能器指向性优化研究

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摘要图像声纳又称为水下相机，广泛应用于水下目标探测、成像、警戒等工程应用领域，是一种重要的海军军事型号装备。换能器的指向性参数对图像声纳的观察范围和分辨率等指标起着决定性作用，改善图像声纳换能器的指向性对提升声纳图像质量有重要作用。文章利用椭圆长轴布阵的方法设计了一种低指向性起伏弧形阵，并利用声障板，通过边界参数的优化设计拓展单基元的指向性角度。仿真计算和实测数据显示弧形阵水平主波束范围内指向性起伏小于3dB ，接收阵各基元水平指向性角度均大于 120°，结果表明图像声纳换能器的指向性特性改善明显。

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	赵慧1
	2
	马晶鑫1
	王艳2
	卞加聪2
	李海森1

关键词 ：图像声纳, 弧形阵, 宽波束, 指向性起伏, 宽波束基元

Abstract：Image sonar, also known as underwater camera, is widely used in engineering applications such as underwater target detection, imaging, and alert. It is an important naval military equipment. The directivity parameters of the transducer play a decisive role in the observation range and resolution of the image sonar. Improving the directivity of the image sonar transducer plays an important role in improving the quality of the sonar image. In this paper, a low-directivity undulating arc-shaped array is designed by using the elliptical long-axis array method, and the acoustic baffle is used to expand the directivity angle of a single element through the optimal design of boundary parameters. Simulation calculations and measured data show that the directivity fluctuation in the horizontal main beam range of the arc-shaped array is less than 3dB, and the horizontal directivity angle of each element of the receiving array is greater than 120°. The results show that the directivity characteristics of the image sonar transducer have been improved significantly.

Key words： imaging sonar curved array wide beam directivity fluctuation wide beam primitive

收稿日期: 2020-08-25 出版日期: 2021-12-15

引用本文:

赵慧1，2，马晶鑫1，王艳2，卞加聪2，李海森1. 图像声纳换能器指向性优化研究[J]. 振动与冲击, 2021, 40(23): 182-186.
ZHAO Hui1，2, MA Jingxin1, WANG Yan2, BIAN Jiacong2, LI Haisen1. Directivity optimization of image sonar transducer. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(23): 182-186.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2021/V40/I23/182

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