基于FPGA的激光陀螺信号高速精确解调系统  

Laser gyroscope signal demodulate system based on FPGA

作　　者：唐博[1] 李锦明[1] 李士照[1] 

机构地区：[1]中北大学电子测试技术国防科技重点实验室,山西太原030051

出　　处：《电子技术应用》2013年第3期74-76,79,共4页Application of Electronic Technique

摘　　要：利用FPGA的高度并行性和对时延的准确控制,设计对激光陀螺信号的高速、精确解调系统。该系统以XILINX FPGA为硬件核心,通过巧妙的时钟设计和高速高阶滤波设计,很好地实现了对陀螺信号精确鉴相、计数和高速滤波,并协调DSP的后续处理和上位机通信。通过对国产某激光陀螺进行测试发现,本系统解调后得到的陀螺角速度10S、100S的方差都明显优于现有系统的测试结果,系统响应时间也得到极大提高。Taking advantage of the high paralleling and dedicate controlling of the time of FPGA, we designed a high speed and high accuracy system to demodulate gyro signal. This system use the FPGA of XILINX company as the core hardware, through the subtly program design, we completely realized the high accurate phase demodulation ,counting and high speed filtering of the gyro signal, meanwhile the system controls lateral DSP to compute and communicate with PC. After testing experiment on the domestic laser gyro using our system, the result shows that this system has a much better performance of 10 S and 100 S on gyro rotational speed variance.

关 键 词：激光陀螺 FPGA数字滤波 鉴相解调 FPGA时钟设计 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]