Title :
Anti-leakage NDFT and its application in data reconstruction
Author_Institution :
Coll. of Phys. & Inf. Sci., Tianshui Normal Univ., Tianshui, China
Abstract :
Spectra estimation of irregularly sampled signals is an important issue in data reconstruction with Fourier transform. To improve spectral resolution of irregular sampling signals, this paper presents an anti-leakage non-uniform discrete Fourier transform (NDFT). The computation of DFT is performed via iterative non-linear estimation. Successful applications in harmonic retrieval and data reconstruction of real field VSP are demonstrated.
Keywords :
discrete Fourier transforms; iterative methods; nonlinear estimation; signal reconstruction; signal sampling; spectral analysis; VSP; antileakage NDFT; antileakage nonuniform discrete Fourier transform; data reconstruction; harmonic retrieval; irregular signal sampling; iterative nonlinear estimation; spectra estimation; Discrete Fourier transforms; Equations; Estimation; Harmonic analysis; Signal resolution; Time series analysis; anti-leakage; data reconstruction; harmonic retrieval; irregularly sampled signals; non-uniform discrete Fourier transform (NDFT); spectrum estimation; vertical seismic profiling (VSP);
Conference_Titel :
Image and Signal Processing (CISP), 2010 3rd International Congress on
Conference_Location :
Yantai
Print_ISBN :
978-1-4244-6513-2
DOI :
10.1109/CISP.2010.5647641
