摘要
超声波在空气中传播时,顺风与逆风时会存在一个速度差。在同等声程下,通常测量风速的方法是相关法和相位差测量方法。该文通过比较两种方法的优缺点,提出了一种新的改进算法来测风速,将相关法和相位差算法结合,并通过仿真来验证算法优越性。
When the ultrasonic wave disseminates in the air, there will be a speed difference between the down wind and the upwind. In the same sound path, the correlation method and phase difference measurement method are usually used to measure the wind speed. By comparing the advantages and disadvantages of the two methods, this paper proposes a new improved algorithm to measure the wind speed, which combines the correlation method and phase difference measurement method. At last we validate the algorithm superiority by simulation.
出处
《压电与声光》
CAS
CSCD
北大核心
2015年第3期468-472,共5页
Piezoelectrics & Acoustooptics
关键词
超声波
风速风向
相关法
相位法
ultrasonic wave
wind speed and direction
correlation method
phase method
