NDLI: Method of stepped frequency signal processing based on fractional Fourier transform

Content Provider	IEEE Xplore Digital Library
Author	Bai Jin-liang Gao Mei-guo Xu Cheng-fa
Copyright Year	2008
Description	Author affiliation: Sch. of Inf. Sci. & Technol., Beijing Inst. of Technol., Beijing (Bai Jin-liang; Gao Mei-guo; Xu Cheng-fa)
Abstract	This paper proposes a method of the stepped frequency signal processing based on fractional Fourier transform. Conventional IDFT processing of stepped frequency signal without velocity compensation will cause high resolution range profile aberration, thus reduce the detection performance. As the echo wave of the moving target in Doppler dimension can be considered as chirp form, so high resolution range can be obtained by detecting and estimating the parameters of the chirp signal through fractional Fourier transform (FRFT). As a linear transform, the FRFT avoids the cross term interference while dealing with multi-component signals. The method based on FRFT does not need velocity compensation, furthermore it realize the combinational estimation of the high resolution range and velocity of the target. Fast algorithm of the FRFT is adopted in this paper, which makes the computations of the FRFT be comparable to that of FFT. Simulation results and experiments on real data show the efficiency and validity of the proposed method.
Starting Page	2550
Ending Page	2553
File Size	280580
Page Count	4
File Format	PDF
ISBN	9781424421787
DOI	10.1109/ICOSP.2008.4697669
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-26
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Signal processing Fourier transforms Signal resolution Energy resolution Interference Chirp Time frequency analysis Computational efficiency Radar Detectors
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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