与Tonpilz换能器阵列相互作用的被声呐照射的声呐窗的动态响应。

Dynamic response of an insonified sonar window interacting with a Tonpilz transducer array.

作者信息

Hull Andrew J

机构信息

Autonomous Systems and Technology Department, Naval Undersea Warfare Center Division, Newport, Rhode Island 02841, USA.

出版信息

J Acoust Soc Am. 2007 Aug;122(2):794-803. doi: 10.1121/1.2749702.

DOI:10.1121/1.2749702

PMID:17672630

Abstract

This paper derives and evaluates an analytical model of an insonified sonar window in contact with an array of Tonpilz transducers operating in receive mode. The window is fully elastic so that all wave components are present in the analysis. The output of the model is a transfer function of a transducer element output voltage divided by input pressure versus arrival angle and frequency. This model is intended for analysis of sonar systems that are to be built or modified for broadband processing. The model is validated at low frequency with a comparison to a previously derived thin plate model. Once this is done, an example problem is studied so that the effects of higher order wave interaction with acoustic reception can be understood. It was found that these higher order waves cause multiple nulls in the region where the array detects acoustic energy and that their locations in the arrival angle-frequency plane can be determined. The effects of these nulls in the beam patterns of the array are demonstrated.

摘要

本文推导并评估了一个与处于接收模式的Tonpilz换能器阵列接触的被声照射声纳窗口的解析模型。该窗口是完全弹性的，因此在分析中所有波分量都存在。模型的输出是一个换能器元件输出电压除以输入压力相对于到达角和频率的传递函数。该模型旨在用于对将要构建或修改以进行宽带处理的声纳系统进行分析。该模型在低频下通过与先前推导的薄板模型进行比较而得到验证。完成此操作后，研究了一个示例问题，以便能够理解高阶波与声学接收相互作用的影响。结果发现，这些高阶波在阵列检测声能的区域中导致多个零点，并且可以确定它们在到达角-频率平面中的位置。展示了这些零点在阵列波束图中的影响。