华中科技大学学报（自然科学版）2024，Vol.52Issue(3)：52-57,6.DOI:10.13245/j.hust.240089
超声透金属通信的简化频域信道模型
Simplified frequency-domain channel model of ultrasonic through-metal communication
摘要
Abstract
A simplified frequency-domain channel model was proposed to address the complexity of the existing channel model for ultrasonic through-metal(UTM)communication.The frequency response of ultrasonic propagation in the metal wall was derived by utilizing the exponential attenuation characteristic and equal time interval characteristic of echoes.To approximate the amplitude-frequency characteristic of the piezoelectric transducer,the frequency response was combined with a Gaussian function.Subsequently,the combined frequency response was modified using scaling and shift coefficients to obtain the simplified frequency-domain channel model for UTM communication.Finite element simulation was conducted to verify the characteristics of ultrasonic propagation in the metal wall.The proposed simplified channel model was compared to the existing UTM channel model.Results demonstrate that the amplitude-frequency curves of the metal wall,the transducer and the overall channel in the proposed simplified model closely match those of the existing model,which verifies the accuracy of the proposed simplified model.关键词
超声波/透金属通信/频域/信道模型/压电换能器Key words
ultrasonic/through-metal communication/frequency-domain/channel model/piezoelectric transducer分类
信息技术与安全科学引用本文复制引用
许琳森,杨维,田洪现..超声透金属通信的简化频域信道模型[J].华中科技大学学报（自然科学版）,2024,52(3):52-57,6.基金项目
国家自然科学基金资助项目(62071032). （62071032）
