王洪1,,,
周郭飞2
1.北京交通大学电子信息工程学院 北京 100044
2.公安部第一研究所 北京 100048
基金项目:国家自然科学基金(U1534201)
详细信息
作者简介:周晓波:男,1973年生,副教授,研究方向为信号处理、专用集成电路设计
王洪:男,1996年生,硕士生,研究方向为信号处理、数字集成电路设计
周郭飞:男,1976年生,副研究员,研究方向为微弱信号处理技术和集成电路设计
通讯作者:王洪 18120019@bjtu.edu.cn
中图分类号:TN911.72计量
文章访问数:397
HTML全文浏览量:196
PDF下载量:80
被引次数:0
出版历程
收稿日期:2020-06-08
修回日期:2020-11-27
网络出版日期:2020-12-02
刊出日期:2021-07-10
An Impulse Noise Detection Algorithm Based on Kurtosis and FPGA Implementation
Xiaobo ZHOU1,Hong WANG1,,,
Guofei ZHOU2
1. School of Electronics and Information Engineering, Beijing Jiaotong University, Beijing 100044, China
2. The First Research Institute of the Ministry of Public Security, Beijing 100048, China
Funds:The National Natural Science Foundation of China (U1534201)
摘要
摘要:针对激光测振系统中散斑效应导致的语音脉冲噪声,该文研究了一种基于4阶累积量的峰度检测算法,推导了峰度系数和归一化峰度系数的数学迭代公式,并在FPGA的实现中提出了一种峰度系数的动态阈值的判决方法。基于实验数据的仿真结果表明,该算法较理论公式减少了约25%的计算量,节省了硬件资源,对较小幅度的脉冲噪声具有更敏感的检测性能。
关键词:激光测振/
散斑效应/
脉冲噪声/
峰度检测
Abstract:For the speech impulse noise caused by the speckle effect in the laser vibration measurement system, a kurtosis detection algorithm based on the fourth-order cumulant is studied, and the mathematical iterative formulas for the kurtosis coefficient and the normalized kurtosis coefficient are deduced, and a method for determining the dynamic threshold of kurtosis coefficient is proposed in FPGA. The simulation results based on experimental data show that the algorithm reduces the calculation by about 25% compared with the theoretical formula and saves hardware resources, and has a more sensitive detection performance for lower amplitude impulse noise.
Key words:Laser vibration measurement/
Speckle effect/
Impulse noise/
Kurtosis detection
PDF全文下载地址:
https://jeit.ac.cn/article/exportPdf?id=c6e311b8-037a-4285-b50a-6a526dd29106