基于二次相关的双阵元接收阵列超声波风矢量测量  

Quadratic correlation-based ultrasonic wind vector measurement of dual-array receiver arrays

作　　者：单泽彪[1,2] 韩明轩 谢世娟 刘小松 Shan Zebiao;Han Mingxuan;Xie Shijuan;Liu Xiaosong(School of Electronic and Information Engineering,Changchun University of Science and Technology,Changchun 130022,China;Changchun Meteorological Instrument Research Institute,Changchun 130102,China)

机构地区：[1]长春理工大学电子信息工程学院,长春130022 [2]长春气象仪器研究所,长春130102

出　　处：《电子测量与仪器学报》2023年第8期113-119,共7页Journal of Electronic Measurement and Instrumentation

基　　金：吉林省自然科学基金(YDZJ202301ZYTS412);吉林省科技发展计划项目(20220204138YY)资助。

摘　　要：针对在低信噪比条件下超声波风速风向测量精度低的问题,提出一种基于二次相关法的双阵元接收阵列超声波风速风向测量方法。首先采用由一个超声波发射传感器和两个接收传感器组成的阵列结构,其次在该系统结构基础上给出一种基于二次相关的超声波传播时间测量方法,利用二次相关算法对噪声抑制更强的性能可有效提高风速风向测量的精度。最后通过模拟仿真实验对所提测风方法进行有效性验证,并通过双阵元测风系统进行了实测数据验证。实验结果表明,基于二次相关算法的双阵元接收阵列超声波传感器风速风向测量方法具有较强的噪声抑制能力,在实测环境下风速风向最大测量误差分别为0.24 m/s和2.4°,基本达到了超声波测风仪的设计要求。Since the wind speed and direction measurement accuracy of ultrasonic anemometers is low and the noise suppression capacity is poor,a double-array receiving array ultrasonic sensor wind speed and direction measurement technique based on the secondary correlation method is presented.Firstly,an array structure consisting of an ultrasonic transmitting array and two receiving arrays is adopted,secondly,a method for measuring ultrasonic propagation time based on quadratic correlation is given according to the structure of the system,which can effectively improve the accuracy of wind speed and direction measurement by using stronger performance of the quadratic correlation algorithm for noise suppression.Finally,the effectiveness of the proposed method is verified by simulation experiments and a real measurement system built.The experimental results show that the wind speed and direction measurement method of the dual-array receiving array ultrasonic sensor based on the quadratic correlation algorithm has a strong noise suppression capability,and has a higher wind vector measurement accuracy.The practical test shows that the maximum error of wind speed and wind direction angle measurement are 0.24 m/s and 2.4°,which basically meets the accuracy requirements of ultrasonic wind speed and direction measurement.

关 键 词：超声波测风 风速风向测量 二次相关 双阵元阵列结构 

分 类 号：TN911[电子电信—通信与信息系统] TH765[电子电信—信息与通信工程]