RESEARCH ON THE PARAMETRIC ARRAYS ACOUSTIC CHARACTERISTICS IN LAYERED MEDIUM

摘要：

　　The parametric array can eradiate high directivity, low frequency beams with a small aperture, so it has gained wide attention in underwater acoustic engineering.Meanwhile, the parametric arrays conversion efficiency is very low, severely restrict the parametric arrays further application.In order to improve the conversion efficiency, this report used the KZK equation to calculate the parametric arrays acoustic characteristics in the layered medium.Results showed that the maximum values of the difference wave always appeared at the junction of the layered medium, and the layered medium with larger nonlinear parameter, smaller velocity and lower attenuation coefficient has a larger conversion efficiency.The report may provide theoretical guidance for the parametric arrays future applications.

关键词： Parametric array Conversion efficiency KZK equation Layered medium

作者: Zhong-zheng LI Er-zheng FANG Chuang HAN Chun-cheng ZHANG

作者单位: Unit 92198 of Naval, Xingcheng 125109, China College of Underwater Acoustics Engineering, Harbin Engineering University, Harbin 150001, China College of Measurement and Communication, Harbin University of Science and Technology, Harbin 150080 Chongqing Military Representative Bureau of Navy Equipment Department, Chongqing 400042, China

会议类型: 国际会议

会议名称: The 2017 Symposium on Piezoelectricity,Acoustic Waves and Device Applications(2017全国压电和声波理论及器件技术研讨会)

会议地点: 成都

会议语种:英文

页码: 202-205

在线出版日期: 2017-10-27（万方平台首次上网日期，不代表论文的发表时间）