基于声参量阵的风速测试方法研究

Acoustic parametric array has become an interdisciplinary research hotspot of nonlinear acoustics, nonlinear signal process and nonlinear system control in recent years. A new wind speed testing method and sensor can be developed by utilizing the relationship between wind speed and the nonlinear effect of acoustic parametric array to solve the wind speed testing problem in large space. The main research contents of this project are as follows: An acustic parametric array-based wind speed testing model will be established in this project by investigating on the relationship between the nonlinear effect of acoustic parametric array and wind speed; the information extracting method of acoustic parametric array-based wind speed sensor will be researched, and corresponding sigal processing algorithm will be developed by employing nonlinear system control theory and nonlinear signal processing method; the key technique problems of implementing the nonlinear signal processing algorithm of acoustic parametric array-based wind speed sensor in real time will be solved in the project; then, the testing validity of acoustic parametric array-based wind speed testing method will be evaluated by experiments. It is significant to clarify the relationship between the nonlinear effect of acoustic parametric array and wind speed in this project, whose study results will also lay the theoretical and technical foundation for developing acoustic parametric array-based wind speed sensor.

声参量阵是近年来非线性声学、非线性信号处理及非线性系统控制学科交叉领域的研究热点。利用声参量阵非线性效应随风速变化的规律，可发展出一种风速测试新方法及新器件，解决大空间范围内的风速测试难题。本项目的主要研究内容包括：探索声参量阵非线性效应随风速变化的规律，建立声参量阵风速测试理论模型；研究声参量阵风速传感器信息提取方法，并利用非线性系统控制理论与非线信信号处理方法开发相应的信号处理算法；突破在数字信号处理平台上实时实现声参量阵风速传感器非线性信号处理算法的关键技术；以实验检测评估基于声参量阵的风速测试方法的测试效果。本项研究将有利于弄清声参量阵非线性效应随风速变化的规律，并解决声参量阵风速传感器发展中的基础理论与关键技术问题。

声参量阵是近年来非线性声学、非线性信号处理及非线性系统控制学科交叉领域的研究热点。利用声参量阵非线性效应随风速变化的规律，可发展出一种风速测试新方法及新器件，解决大空间范围内的风速测试难题。本项目研究了声参量阵非线性效应随风速变化的规律，建立了声参量阵非线性效应随风速变化的理论模型及声参量阵风速测试的理论模型，采用非线性系统控制理论与非线性信号处理方法开发出了声参量阵风速测试信号处理算法，并解决了数字信号处理平台上声参量阵风速测试非线性信号处理算法实时实现涉及的理论及关键技术问题。在此基础上，研制了基于声参量阵的风速传感器样机，并证明了基于声参量阵风速测试方法是有效的。本项目的研究弄清了声参量阵非线性效应随风速变化的规律，并解决了声参量阵风速传感器发展中的基础理论与关键技术问题。