波阵面声定向的实验研究

AN EXPERIMENTAL STUDY FOR INFRASONIC LOCATION BY USING THE WAVE FRONTS

摘要: 本文介绍了平面波近似声定向方法的实验研究。它是以三元子阵为基础,从波阵面出发,从而得到一组定向结果。这种解法繁简适中,处理过程规则,便于一般数字处理系统采用。特别由于次声波传播很远,而中间介质状态很难精确知道,因此本法常常获得较好结果(相对更精确方法而言)。
文内还给出了这种方法应用的具体试验结果。即使在平面声波条件不甚满足的情况下,其定向的相对误差也只有3.3%。

Abstract: An experimental study for sonic location by using the wave fronts is presented. On the basis of three element array and the wave fronts, we can obtain a set of solutions of azimuths and speeds of the sound. Therefore, we can obtain the location of the source.
Experimental results of the infrasonic signal processing by this method are given. In some cases, although the condition of plane sound is not too satisfactory, the relative error of the azimuth is only 3.3%.