数字滤波器混沌特性的分析及其仿真  

Analysis and Simulation of Chaos in Digital Filters

作　　者：邓怀东[1] 张效义[1] 

机构地区：[1]解放军信息工程大学信息工程学院,郑州450002

出　　处：《数据采集与处理》2006年第B12期30-33,共4页Journal of Data Acquisition and Processing

摘　　要：介绍了非线性数字滤波器的混沌特性,通过m序列加扰及滤波器系数的选择改善了其输出序列的混沌特性,并且利用现场可编程门阵列(Field programmable gate array,FPGA)对其进行了实现。对FPGA的输出序列,利用Matlab软件进行了提取与仿真。结果表明,该混沌序列具有良好的相关性和均匀性,具有较高的实用价值。The chaotic performance of nonlinear digital filters is introduced. And then the performance of the output sequence is improved by selecting m-sequence and proper coefficients. Moreover,it is realized in the field programmable gate array （FPGA） and then tested in Matlab. The result proves that the chaos sequence has characteristics of Hamming auto-correlation, cross-correlation and uniformity. So it holds a high practical value.

关 键 词：混沌 非线性滤波器 FPGA 

分 类 号：TP271[自动化与计算机技术—检测技术与自动化装置] TP29[自动化与计算机技术—控制科学与工程]