摘要
针对时间域航空电磁领域二次场晚期信号呈e指数衰减的特性,结合收录系统对航空电磁信息和GPS串行信息的同步需求,并考虑到高可靠性和宽温的应用环境,采用多线程、边沿检测、异步FIFO等技术,设计了基于PC104架构的多信息流数据同步的时间域航空电磁收录系统。实验证明,该系统实现了192 kSa/s采样率下二次场电压信息、发射电流信息与1 Hz GPS串行流信息的收录,同步精度达到了5.2μs。
Aiming at the characteristic of e-exponential decay in the late signal of the secondary field in the time domain aviation electromagnetic field,combined with the synchronization requirements of the recording system for aviation electromagnetic information and GPS serial information,and considering the application environment of high reliability and wide temperature,this article uses more Threading,edge detection,asynchronous FIFO and other technologies have designed a time-domain aviation electromagnetic recording system based on the PC104 architecture for multi-information flow data synchronization. Experiments have proved that the system has realized the recording of secondary field voltage information,emission current information and 1 Hz GPS serial stream information at a sampling rate of 192 kSa/s,and the synchronization accuracy has reached 5.2 μs.
作者
王言章
王麒
周险峰
王世隆
WANG Yanzhang;WANG Qi;ZHOU Xianfeng;WANG Shilong(Key Laboratory for Geophysical Instrumentation of Ministry of Education,Changchun 130012,China;School of Instrumentation&Electrical Engineering,Jilin University,Changchun 130012,China;North Automatic Control Technology Institute,Taiyuan 030006,China)
出处
《火力与指挥控制》
CSCD
北大核心
2022年第5期60-65,74,共7页
Fire Control & Command Control
基金
国家重点研发计划基金资助项目(2017YFC0601802)。
关键词
航空电磁探测
TEM
PC104架构
异步FIFO
同步采集
airborne electromagnetic detection
TEM
PC104 architecture
asynchronous FIFO
synchronous acquisition
