先備離散分數傅立葉轉換演算法

葉孟祺, 李東岡, 彭信祺, 謝新銘 - 電腦視覺, 影像處理與資訊技術 …, 2010 - airitilibrary.com
在傅立葉估測問題中, 如果傅立葉頻譜資料數據有限, 則存在無限多解, 會發生估測失真的現象.
這個問題可以使用先備知識 (Prior Knowledge) 求得更精確的答案, 而先備離散傅立葉轉換 …

Calculation of discrete fractional Fourier transform based on adaptive LMS algorithm

Y Zhu, L Qi, S Yang, X Mu - 2006 8th international Conference …, 2006 - ieeexplore.ieee.org
This paper establishes a relation between the least mean square (LMS) algorithm and the
discrete fractional Fourier transform (DFRFT). It is shown that the LMS algorithm could …

A centered DFT-based discrete fractional Fourier transform and its application to chirp signal parameter estimation

A Serbes, L Durak - 2009 17th European Signal Processing …, 2009 - ieeexplore.ieee.org
We propose a new discrete fractional Fourier transform (DFrFT) scheme based on
eigentransforms of the centered DFT matrix and present its application to chirp parameter …

Signal recovery from partial fractional Fourier transform information

AE Cetin, H Ozaktus, HM Ozaktus - … Symposium on Control …, 2004 - ieeexplore.ieee.org
The fractional Fourier transform has found many applications in signal and image
processing and optics. An iterative algorithm for signal recovery from partial fractional …

Spectrum Estimation of Pseudo-random Nonuniformly Sampled Signals in the Fractional Fourier Transform Domain

X Huifa, L Feng - 2010 WASE International Conference on …, 2010 - ieeexplore.ieee.org
The fast Fourier transform (FFT) and the fast fractional Fourier transform (FRFT) are used
widely in signal processing for uniformly sampled signals. However, in many applications …

Aliasing Error Estimation of Fractional Fourier Transform Based on Windowed Samples

FJ Yan, BZ Li - 2019 IEEE International Conference on Signal …, 2019 - ieeexplore.ieee.org
The fractional powers of the Fourier transform operator is a generalization of the Fourier
transform. Although there are many works on the derivation of sampling about fractional …

A sampling theorem for the fractional Fourier transform without band-limiting constraints

J Shi, W Xiang, X Liu, N Zhang - Signal Processing, 2014 - Elsevier
The fractional Fourier transform (FRFT), a generalization of the Fourier transform, has
proven to be a powerful tool in optics and signal processing. Most existing sampling theories …

Linear algebraic analysis of fractional Fourier domain interpolation

FS Oktem, HM Ozaktas - 2009 IEEE 17th Signal Processing …, 2009 - ieeexplore.ieee.org
In this work, we present a novel linear algebraic approach to certain signal interpolation
problems involving the fractional Fourier transform. These problems arise in wave …

Parameter Estimation of Fractional Bandlimited LFM Signals Based on Orthogonal Matching Pursuit

X Li, H Wang, Z Luo - IEICE Transactions on Fundamentals of …, 2019 - search.ieice.org
Parameter estimation theorems for LFM signals have been developed due to the
advantages of fractional Fourier transform (FrFT). The traditional estimation methods in the …

1 A New Affine Fractional Fourier Transform With Circular Convolution Property

A Nafchi, M Esmaeili, B Santhanam… - 2023 57th Asilomar …, 2023 - ieeexplore.ieee.org
The fractional Fourier transform is a ubiquitous signal processing tool in basic and applied
sciences and generalizes the Fourier transform. The convolution property of the discrete …