摘要
为了研究自适应滤波在噪声消除,干扰抑制以及雷达信号处理中的广泛应用,对滤波器各影响因素进行了分析,提出了各参数的设计规则。以自适应滤波理论为基础,将信号划分成不同的子带通过原型分析综合滤波器组,将处理后的各路信号叠加可恢复原信号。选择合理的参数设置滤波器可以使系统的综合性能最优,同时可以将信号在传输过程中造成的损失减小到最低。通过大量仿真验证了该参数选取规则的准确性和有效性。
In order to study the adaptive filter which have applications in fields such as eliminating noise,restraining interference and processing radar signal,The factors are researched and parameters of the design rules are analyzed.Based on the adaptive filters we divide the signal into different sub-bands,via the prototype analysis and synthesis filters,the output signals are from all the synthesis filters,we can better restore the original signals,decrease the in-band residual aliasing distortion and pass-band response error.Selecting the reasonable parameters can obtain an optimal performance.The rules are proved to be effective.
出处
《计算机工程与设计》
CSCD
北大核心
2012年第5期2068-2072,共5页
Computer Engineering and Design
基金
中央高校基本科研业务费专项基金项目(20102120101000120)
关键词
自适应滤波
过采样DFT调制
子带分析综合滤波器
通带混叠失真
截止频率
系统总响应误差
adaptive filters
oversampled DFT modulated filters
the sub-bands analysis and synthesis filters
in-band aliasing distortion
cut-off frequency
total system response errors
