Comments on "Discrete Chirp-Fourier transform and its application to chirp rate estimation"

被引：52

作者：

Guo, X ^{[1
]}

Sun, HB

Wang, SL

Liu, GS

机构：

[1] Nanjing Univ Sci & Technol, Res Ctr Elect Engn Technol, Nanjing, Peoples R China

[2] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 2263, Singapore

[3] Nanjing Res Inst Elect Technol, Nanjing, Peoples R China

来源：

IEEE TRANSACTIONS ON SIGNAL PROCESSING | 2002年 / 50卷 / 12期

关键词：

Chirp-Fourier transform; chirp rate estimation; picket-fence effect;

D O I：

10.1109/TSP.2002.805492

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This comment points out that the sample rate of the discrete chirp-Fourier transform (DCFT) proposed by Xia is not sufficient to avoid severe "picket-fence" effect and causes some restrictions for its practical applications. By increasing the sample rate and modifying the DCFT definition, a new robust DCFT is proposed.

引用

页码：3115 / 3115

页数：1