摘要
对FIR数字滤波器频响的振荡特性及其产生的原因进行了深入分析,并结合其在电力系统中的应用,给出了在保证频响满足要求的前提下,可显著降低滤波器阶数的优化方法——旁瓣重合法。通过在Matlab/Simulink平台上仿真,证明了这种方法的有效性。
By analyzing the characteristics and the cause of the FIR digital filter＇s frequency loud vibration,combining with its application in electrical power system,the article expounds an optimized method-side lobe coincidence method.The method can guarantee frequency sound,satisfy the request,and obviously reduce the filter exponent number.It is proved to be valid by simulating in the Matlab/Simulink platform.
出处
《常州信息职业技术学院学报》
2010年第3期19-21,24,共4页
Journal of Changzhou College of Information Technology
关键词
FIR
数字滤波器
窗函数
旁瓣重合法
FIR
Digital filter
window function
Side lobe coincidence
