摘要
声成像系统中,阵列布局决定着声源的定位性能。目前,与阵列布局性能评估相关的研究还不够完备。针对此问题,在远场模型下调整声源频率(10~25 kHz),基于常规波束成形方法计算几种常见的螺旋阵列波束图,分析其主瓣宽度(Main Lobe Width,MLW)和旁瓣级(Side Lobe Level,SLL)。结果表明,对数螺旋阵列的旁瓣级较低且主瓣宽度最窄,定位性能最佳。
In acoustic imaging system,array layout determines the localization performance of sound source.At present,the research related to array layout performance evaluation is not complete enough.In order to solve this problem,the frequency of sound source is adjusted(10~25 kHz)in the far-field model,and several common spiral array beam patterns are calculated based on the conventional beamforming method,and their Main Lobe Width(MLW)and Side Lobe Level(SLL)are analyzed.The results show that the logarithmic spiral array has the lowest sidelobe level and the narrowest main lobe width,and the positioning performance is the best.
作者
许佳斌
曹正年
诸皓冉
赵慎
XU Jiabin;CAO Zhengnian;ZHU Haoran;ZHAO Shen(School of Advanced Interdisciplinary Studies,Hunan University of Technology and Business,Changsha 410000,China;School of Intelligent Engineering and Intelligent Manufacturing,Hunan University of Technology and Business,Changsha 410000,China)
出处
《电声技术》
2023年第5期34-38,共5页
Audio Engineering
关键词
阵列布局
常规波束成形
主瓣宽度
旁瓣级
对数螺旋阵列
array layout
conventional beamforming
main lobe width
sidelobe level
logarithmic spiral
