摘要
针对现有基于FPGA的引信定距系统功耗大的问题,设计了一种基于STM32的毫米波LFMCW定距系统。本文在分析LFMCW定距原理的基础上,使用STM32F746单片机实现定距功能。本系统采用定时器触发ADC的方式对差频信号进行采样,使用DMA搬运采样数据,再对数据滤波后做FFT处理提取目标距离信息,最后通过串口输出起爆信号。实验结果表明,该定距系统可处理实时信号且具有精度高,功耗低,通用性强等优点。
Aiming at the problem of high power consumption of fuze distance determination system based on FPGA,a millimeter wave LFMCW ranging system based on STM32 is designed.Based on the analysis of LFMCW ranging principle,this paper uses STM32 F746 to realize the ranging function.The system uses timer to trigger ADC to sample the difference frequency signal,uses DMA to carry the sampling data,then filters the data and extracts the target distance information by FFT processing,and finally outputs the detonation signal through the serial port.The experimental results show that the ranging system can process real-time signals and has the advantages of high ranging accuracy,low power consumption and strong versatility.
作者
马静
刘景萍
曾世杰
徐晓倩
赵凯伦
MA Jing;LIU Jing-ping;ZENG Shi-jie;XU Xiao-qian;ZHAO Kai-lun(School of Electronic and Optical Engineering,Nanjing University of Science of Technology,Nanjing 210094,China)
出处
《微波学报》
CSCD
北大核心
2021年第S01期146-149,共4页
Journal of Microwaves
基金
国家自然科学基金(61871442)
部委基金(2020-JCJQ-JJ-397)
重大专项(2017-JCJQ-ZD-004)
