用分数阶傅里叶变换估计LFM信号参数

2011 IEEE 19th Signal Processing and Communications Applications Conference (SIU) Pub Date : 2011-04-20 DOI:10.1109/SIU.2011.5929841

Ozgun Ayaz, A. Serbes, L. Durak-Ata

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引用次数: 4

摘要

提出了一种用于估计线性调频信号啁啾率的检测器。所提出的检测器是通过计算信号的分数阶傅里叶变换的四次方模数的最大值来制定的。它具有与Radon变换的模方检测器相似的性能，但其计算量要低得多。所提出的检测器已推广到分数阶傅里叶变换(n > 2)的n次方模数，并进行了计算机模拟以证实其在现有检测器中的有效性。

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Estimation of LFM signal parameters by using the fractional fourier transform

A detector for estimating the chirp rate of linear frequency modulated signals is proposed. The proposed detector is formulated by calculating the supremum of the 4th-power modulus of the fractional Fourier transform of the signal. It has similar performance to the modulus square detector of the Radon transform yet its computational complexity is much lower. The proposed detector has been generalized for the nth-power modulus of the fractional Fourier transform (n > 2) and computer simulations have been performed to confirm its efficiency amongst existing detectors.

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2011 IEEE 19th Signal Processing and Communications Applications Conference (SIU)

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