摘要
对平面相控阵加上一定的时间延迟即可实现声波的聚焦的性质进行了研究,推出了平面相控阵的空间声压分布表达式,并采用数值分析法,探讨了相控阵的尺寸对声波聚焦效果的影响。为进一步研究相控阵打下了基础。
The focusing feature of phased arrays is studied. Phased arrays can focus propagating waves when the elements of phased arrays are individually excited with predetermined time delays. A expression in the three-dimensional sound pressure distri bution is derived. By means of numerical method, the influences of transducer parameters on focusing effect is analyzed, including the number of elements(N), interelement spacing(d), elevation dimension(L), width dimension(a). All this can be a fundament for deeper investigate phased arrays.
出处
《应用声学》
CSCD
北大核心
2004年第3期23-28,共6页
Journal of Applied Acoustics
