测试技术学报2017，Vol.31Issue(1)：29-33,5.DOI:10.3969/j.issn.1671-7449.2017.01.005
结合CPLD测时的改进互相关算法在红外测速系统中的应用
Research on the Application of Improved Cross Correlation Algorithm in Combined with CPLD Time Measurement in Infrared Velocity Measurement System
韩亚秋 1贾云飞1
作者信息
- 1. 南京理工大学,机械工程学院,江苏南京210094
- 折叠
摘要
Abstract
Thetraditional cross-correlation algorithm has a large amount of computation in calculating time difference of projectile passing through two targets,it is not conducive to real-time measurement.In order to solve the problem,an improved cross correlation algorithm combinedwith CPLD time measurement was proposed to calculate the time difference.Based on the analysis of thesignal changes of the projectile passing through the targets,the estimated value of the time difference was measured by the CPLD test module.It was proposed that the cross correlation analysis the effective signals after screening based on the the estimated valueto obtain the time difference of the projectile,and then calculating speed.Finally,through the analysis of the MATLAB simulation signal,it shows that the improved algorithm has less computation and higher precision.关键词
CPLD测时/互相关算法/MATLAB仿真/红外测速系统/实时测量Key words
CPLD measurement/cross correlation algorithm/MATLAB simulation/infrared velocity measurement system/real-time measurement分类
机械制造引用本文复制引用
韩亚秋,贾云飞..结合CPLD测时的改进互相关算法在红外测速系统中的应用[J].测试技术学报,2017,31(1):29-33,5.
