| 非均匀采样下小信号检测与重构的陷波方法 | |
| 汪安民 ; 陈良福 ; WANG An-min ; CHEN Liang-fu | |
| 2010-06-09 ; 2010-06-09 | |
| 关键词 | 非均匀采样 陷波 重构 Nonuniform sampling Notch filter Recovery TN911.23 |
| 其他题名 | Weak Signal Detection and Recovery from Nonuniform Samples Using Notch Filter |
| 中文摘要 | 非均匀采样由于其具有不受采样频率限制和抗混叠等优点,使得其应用十分广泛。但非均匀采样会引起频谱噪声,使得信号中的幅度小的频率成分不易检出。本文分析了非均匀采样引起频谱噪声的原因,根据非均匀采样检测得到的大幅度信号,应用陷波器将其消除,降低频谱噪声,从而检测和重构出小信号。文中详细说明了陷波方法的原理以及陷波器在非均匀采样下的应用,最后给出实验结果。理论和实验表明,采用陷波方法可以检测和重构出非均匀采样下的小信号。; The theory of nonuniformly sampling is widely used because of its many advantages.A novel notch filter method for nonuniform sampling is studied in this paper.This method is very effective to suppress noise of spectrum by filtering the signal with the maximal amplitude so that it can detect the low amplitude signal.The real signal can be recovery from the digital signal by IFFT after notch filter.The fundamental of notch filter and threshold filtering are introduced,the characteristics of the notch filter are analyzed,and the processing procedure of notch filter is presented. |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/53678]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 汪安民,陈良福,WANG An-min,等. 非均匀采样下小信号检测与重构的陷波方法[J],2010, 2010. |
| APA | 汪安民,陈良福,WANG An-min,&CHEN Liang-fu.(2010).非均匀采样下小信号检测与重构的陷波方法.. |
| MLA | 汪安民,et al."非均匀采样下小信号检测与重构的陷波方法".(2010). |
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