摘要
针对传统分布式光纤IQ数据采集系统存在信噪比低、价格昂贵和仪器笨重的不足,设计了一种以现场可编程阵列(FPGA)为主控的分布式光纤IQ数据采集系统。利用硬件编程实现信号幅值解调和触发采样的方式,并通过改进系统的差分累加算法,经压电陶瓷(PZT)模拟振动实验测得该振动检测系统的信噪比可达13.3dB左右。该系统解决了数据量大的问题,同时降低了系统成本,提高了信噪比。
A distributed optical fiber IQ data acquisition system based on field programmable array(FPGA) is designed to overcome the shortcomings of traditional distributed optical fiber IQ data acquisition system,such as low signal-to-noise ratio,high cost and heavy instrument.The signal amplitude demodulation and trigger sampling are realized by hardware programming,and the signal-to-noise ratio of the vibration detection system can reach about 13.3 dB by improving the differential accumulation algorithm of the system and simulating vibration experiment with piezoelectric ceramics(PZT).The system solves the problem of large amount of data,reduces the cost of the system and improves the signal-to-noise ratio.
作者
熊显名
王伟
荣琪
XIONG Xianming;WANG Wei;RONG Qi(Key Laboratory of Photoelectric Information Processing,Guilin University of Electronic Science and Technology,Guilin Guangxi 541004,China)
出处
《光通信技术》
北大核心
2019年第9期43-47,共5页
Optical Communication Technology
基金
南宁市科学研究与开发计划(编号20183044-2)资助
