摘要
针对阵列中传感器阵元对声源定位性能的贡献率不同,开展了基于Hanbury Brown and Twiss干涉定位的阵列优化研究。首先,根据声场HBT干涉定位原理,建立了八元直线传感阵列的声学定位理论模型。其次,以阵列定位误差在1%以内为目标,对八元直线传感阵列进行拓扑仿真优化,得到5种四元直线传感阵列。最后,通过实验验证,仿真优化得到的5种四元直线传感阵列中有2种阵列的定位误差在1%以内。通过对传感阵列拓扑优化的研究,能够降低传感器的个数,且保证对声源的定位性能不变,从而减少了阵列信号处理的复杂性。
Considering the different contribution rate of sensors to sound source positioning,an array optimization was conducted.First,according to the principle of Hanbury Brown and Twiss(HBT)interference positioning,a sound positioning theoretical model of 8-element linear sensor array was established.Second,setting the array positioning error within 1%as the goal,the topology simulation of optimization of the sensor array was performed,from which five 4-element linear sensor arrays were obtained.The positioning error of 2 of the 5 types of 4-element linear sensor arrays in experimental simulation was less than 1%.Third,it was verified that the positioning errors of two out of five 4-element linear sensor arrays obtained from the simulating optimization was less than 1%.Therefore,by studying the topology optimization of sensor array,it could reduce the number of sensors and ensure the same positioning performance of sound source,thus reducing the complexity of array signal processing.
作者
刘梦然
李善强
贾雯
聂磊
LIU Meng-ran;LI Shan-qiang;JIA Wen;NIE Lei(Key Laboratory of Modern Manufacture Quality Engineering,Hubei University of Technology,Wuhan 430068,China)
出处
《科学技术与工程》
北大核心
2020年第13期5112-5116,共5页
Science Technology and Engineering
基金
国家自然科学基金(51805154)
精密测试及仪器国家重点实验室开放基金(pilab1805,pilab1708)。
关键词
声场HBT干涉
声学定位
直线阵
阵列优化
HBT interference positioning
sound positioning
linear array
array optimization
