一种多基阵炸点声源定位系统设计

第40卷第4期2017年8月电子器件

Chinese Journal of Electron Devices Vol．40一No．4Aug.2017

项目来源:国家自然科学基金项目(61335008)

收稿日期:2016-06-06一一修改日期:2016-09-20Research and Design of Multi Array Sound

Source Localization System ?

GUO Chun ,LI Jinming ?,GAO Genwei

(National Key laboratory for Electronic Measurement Technology ,Key Laboratory of Instrumentation Science and Dynamic Measurement of Ministry of Education ,North University of China ,Taiyuan 030051,China )Abstract :In order to improve the hit precision and the attack effect of artillery weapon,a burst of multi array sound source localization system is designed.Through the microphone array acquisition target sound source of acoustic signals by multiple array directional results of target intersection positioning,the FPGA +DSP architecture is taken as the array node,which hardware and software are designed in detail,and the time delay estimation and localization algorithm solution of the 3D coordinates of the calculated target sound source is used to achieve precise positioning of shellburst.Finally,based on the simulation of the field environment and a number of tests,the correctness of the azimuth angle estimation theory and the feasibility of the test system have been verified.The results show that this method has high estimation accuracy,and can obtain accurate location information,which has a certain practical value and application prospect.Key words :passive acoustic detection;acoustic sensor;multi array;burst point localization;time delay estimation EEACC :7420;7320C一一一一doi :10.3969/j.issn.1005-9490.2017.04.039

一种多基阵炸点声源定位系统设计

?郭一淳,李锦明?,高根伟(中北大学电子测试国家重点实验室,仪器科学与动态测试教育部重点实验室,太原030051)

摘一要:为提高火炮武器的命中精度和攻击效果,提出了一种基于无源声探测的目标定位技术三系统通过传声器阵列采集目标声源发出的声信号,采用多个基阵定向结果对目标进行交汇定位,搭建了基于FPGA +DSP 架构的基阵节点,对节点的软硬件进行了详细设计,并利用时延估计和定位算法解算出目标声源的三维坐标,实现对炮弹炸点的精确定位三最后模拟现场环境,设计完成了多次测试实验,验证了方位角估计理论的正确性及试验系统的可行性三实验数据表明,该方法具有较高的估计精度,可获得炸点的具体位置信息,具有一定的实用价值和应用前景三

关键词:无源声探测;声传感器;多基阵;炸点定位;时延估计

中图分类号:TN912一一一一文献标识码:A一一一一文章编号:1005-9490(2017)04-0987-07

一一目标打击在军事打击二航空航天二靶场试验中有着广泛的应用,对炮弹扎落点的三维坐标测量

一直是尖端武器设计的关键,因此各种定位技术

和定位设备的研发一直倍受关注三随着信号捕获

和信息处理技术的发展,通过探测目标自身的声二

光二热等辐射信号的无源探测技术的研究越来越

深入[1-2]三尤其是在恶劣环境下,声探测不收视线限制,可实现远距离和大范围的目标检测,因此通

过声传感器实现对炮弹炸点的定位具有重要意义三基于多基阵声源定位技术的炮弹炸点定位是将多个声传感器基阵节点布设在一片测试区域内,通过FPGA +DSP 架构的基阵节点相互组织为无线传感网络,采集目标运动时发出的冲击波来初步实现了多个基阵工况下对目标炸点的定位,具有成本低二布设方便二精确度高等优点[3]三

万方数据