摘要
MEMS矢量水听器具有体积小、成本低、低频特性好等优势,在进行水下目标探测时,能同时拾取水下声场的声压及振速信息,单支水听器就可以实现方位估计。将STM32系列单片机作为控制单元,结合平均声强器算法,设计了一套基于STM32的MEMS矢量水听器实时定向系统,并进行了实验验证。实验结果表明,该系统能实现对水下全方位目标的实时方位估计,定向误差为3°。
MEMS vector hydrophone has the advantages of small size,low cost and good low-frequency characteristics,in underwater target detection,the sound pressure and vibration velocity information of underwater sound field can be picked up at the same time,and a single hydrophone can realize azimuth estimation.A set of MEMS vector hydrophone real-time orientation system based on STM32 was designed by using STM32 series single-chip microcomputer as a micro-controller and combining with the acoustic intensity average,and was verified by experiments.The experimental results show that the system can realize real-time azimuth estimation of underwater omni-directional targets,and the orientation error is 3°.
作者
张一凡
张国军
荆博原
朱珊
梁晓琦
ZHANG Yi-fan;ZHANG Guo-jun;JING Bo-yuan;ZHU Shan;LIANG Xiao-qi(North University of China,State Key Laboratory of Dynamic Measurement Technology,Taiyuan 030051,China)
出处
《仪表技术与传感器》
CSCD
北大核心
2022年第5期77-81,共5页
Instrument Technique and Sensor
基金
国家重大科研仪器研制项目(61927807)
国家重点研发计划(2019YFC0119800)
国家自然科学基金项目(51875535)。
关键词
MEMS
矢量水听器
水下目标探测
平均声强器
方位估计
MEMS
vector hydrophone
underwater target detection
acoustic intensity average
azimuth estimation
