【摘要】 为更好地抑制传统测风方法中噪声的问题,提出了基于MVDR(MinimumVariance Distortioniess Response)波束形成算法,结合一种特殊的弧形阵列的测风研究方法,通过使用四元超声波传感器弧形阵列结构获得冗余空间采样信息,并将阵列所接收信息进行最小方差无畸变响应的波束形成算法处理,从而估计待测的风速风向信息。仿真结果表明,该方法可实现对风速0~60 m/s与风向角0~359°的估计,可实现对风速以及风向的准确测量。更多还原

【Abstract】 There are few methods to restrain noise in the traditional method of measuring wind. In order to better suppress the noise problem,a new method of wind measurement is proposed,which bases on the MVDR( MinimumVariance Distortioniess Response) beamforming algorithm and combines with a special arc array.Redundant spatial sampling information is obtained by using a four element ultrasonic sensor arc array,and the information received by the array is processed by the MVDR beam-forming algorithm to estimate the wind speed and direction information that to be measured. The simulation results show that the estimation of wind speed 0 ~ 60 m/s and wind direction angle 0 ~ 360° can be easily realized. The method is superior to the noise resistance and can be used to measure the wind speed and wind direction angle accurately.更多还原