A fast time-delay estimator for linear frequency modulation signal based on frFt

被引：0
|
作者：
Yang, Cui [1 ]
Yu, Yue [1 ]
Wu, Chaonan [1 ]
Ning, Gengxin [1 ]
机构：
[1] South China Univ Technol, Guangzhou, Guangdong, Peoples R China
来源：
PROCEEDINGS OF 2019 IEEE 3RD INFORMATION TECHNOLOGY, NETWORKING, ELECTRONIC AND AUTOMATION CONTROL CONFERENCE (ITNEC 2019) | 2019年
基金：
中国国家自然科学基金;
关键词：
time-delay estimation; fractional Fourier transform; least squares approximation; PHASE;
D O I：
10.1109/itnec.2019.8729240
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
A fast lime-delay estimator for linear frequency modulation signal is proposed. The new estimator, named by frFt-TELS, searches the maximal bin of fractional Fourier transform (frFt) as a coarse estimation. Then Taylor expansion of theoretical frFt power spectrum around the coarse estimation is deduced. Least squares approximation between the theoretical frFt power spectrum and the frFt power spectrum of the given sample data is applied to gel the fine estimation. Simulations demonstrated that frFt-TELS approaches the performance of traditional estimator with less computational complexity.
引用
收藏
页码：2278 / 2281
页数：4
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