摘要
针对常规兵器试验及部队演习过程中地面多弹丸作用情况判定难题,提出了一种采用传声器阵列测量仪器采集声波,采用时域分段和空域滤波分解爆炸声波判定多弹丸作用情况的技术。首先,根据传感器阵孔径在时域上分割信号,将包含较多爆炸声信号的声波数据分割为多段只包含较少爆炸声波的数据;其次,运用传感器阵波达角估计技术获取各段信号中爆炸声的来向;再次,将信号通过空域滤波技术分解到相应的爆炸声波来波方向,每段信号即被分解为多个信号;最后,检测每个被分解的信号中爆炸声波个数,将其相加即为所有弹丸爆炸数量,据此实现弹丸作用情况判定。应用仿真实验和实弹试验验证了该方法的可行性和有效性,最后分析和探讨了方法使用条件问题。
In order to judge the explosion effect of multiple projectiles on the ground during conventional weapon tests or troop exercises,a technique using microphone array instruments to collect explosion acoustic waves was proposed.It was characterized by employing the time domain segmentation and spatial filtering to decompose explosion acoustic waves,and then the performance of the inspected multiple projectiles was judged.Firstly,the signal was divided into several sub-signals in time domain based on the aperture of the microphone array,which made each subsection with small explosion information segment.Secondly,directions of explosion of each sub-signal were worked out with aid of the sensor array radar angle estimation technology.Thirdly,the spatial filtering technology was used to decompose each sub-signal to the corresponding explosion direction,and hence each sub-signal was further broken up into several feature signals.Finally,the number of explosion acoustic waves in each of the feature signals was detected,and the total number reflected the performance of the inspected projectiles.Simulations were conducted to validate the proposed method.A set of explosion acoustic signals of multiple projectiles were generated under a simulated condition with aid of a real explosion acoustic signal of one projectile,the proposed method was used to assess the explosion effect.The simulation result demonstrates that the proposed method can accurately quantify the explosion effect of multiple projectiles on the ground.
作者
张亚辉
游江
王明启
刘鹏祖
冯松
卢小汐
ZHANG Ya-hui;YOU Jiang;WANG Ming-qi;LIU Peng-zu;FENG Song;LU Xiao-xi(The No.63870 st Troop of PLA,Huayin 714200,China)
出处
《科学技术与工程》
北大核心
2020年第36期14974-14981,共8页
Science Technology and Engineering
关键词
多目标
弹丸
波束形成
波达角
空域滤波
作用率
multiple targets
projectile
beamforming
direction of arrival
spatial filtering
effectiveness
