CAJ | 학술논문

基于对小球散射单频连续声场的研究,利用傅立叶变换对换能器激发的小球散射的脉冲声场进行分析,推导Td,球散射脉冲声场的指向性函数计算公式,并计算了指向性函数值.与实验结果对比表明,在换能器中心频率较低、刚性小球半径较小的情况下,所推导的计算公式是可靠的.
기우대소구산사단빈련속성장적연구,이용부립협변환대환능기격발적소구산사적맥충성장진행분석,추도Td,구산사맥충성장적지향성함수계산공식,병계산료지향성함수치.여실험결과대비표명,재환능기중심빈솔교저、강성소구반경교소적정황하,소추도적계산공식시가고적.
On the basis of the study about the single frequency continuous acoustic field scattered by small ball, the pulse acoustic field scattered by small ball is analyzed by using the Fast Fourier Transform. The calculation formula of the directivity function of the scattering acoustic field is discussed, and the value of directivity function is calculated. Comparison with the results of experiments shows that the formula is reliable in the condition of lower center frequency transducer and smaller ball.