DocumentCode
1218693
Title
Time-Delay Estimation of Chirp Signals in the Fractional Fourier Domain
Author
Tao, Ran ; Li, Xue-Mei ; Li, Yan-Lei ; Wang, Yue
Author_Institution
Dept. of Electron. Eng., Beijing Inst. of Technol., Beijing
Volume
57
Issue
7
fYear
2009
fDate
7/1/2009 12:00:00 AM
Firstpage
2852
Lastpage
2855
Abstract
A new time-delay estimator is presented in this paper. It is evaluated based on the delay property of the fractional Fourier transform with less computation and is suitable for chirp signals. The statistical analysis in terms of signal-to-noise ratio (SNR) and estimation accuracy for this estimation is also studied. The proposed method for the time delay yields a variance which is theoretically equal to the Cramer-Rao lower bound. The validity of this estimation method is demonstrated via simulations.
Keywords
Fourier transforms; signal processing; statistical analysis; Cramer-Rao lower bound; chirp signals; fractional Fourier domain; statistical analysis; time-delay estimation; CramÉr–Rao lower bound; fractional Fourier transform; time-delay estimation;
fLanguage
English
Journal_Title
Signal Processing, IEEE Transactions on
Publisher
ieee
ISSN
1053-587X
Type
jour
DOI
10.1109/TSP.2009.2020028
Filename
4808241
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