QIU Tianshuang   

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Language:English

Paper Publications

Title of Paper:基于高斯加权分数阶傅里叶变换的LFM信号参数估计

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Date of Publication:2016-04-25

Journal:通信学报

Included Journals:EI、PKU、ISTIC、CSCD

Volume:37

Issue:4

Page Number:107-115

ISSN No.:1000-436X

Key Words:分数阶傅里叶变换;高斯加权;线性调频信号;频率估计

Abstract:针对低占空比下传统算法参数估计性能下降的问题,提出了一种高斯加权分数阶傅里叶变换(GFRFT,Gaussian-weighted fractional Fourier transform)参数估计方法.给出了时限信号GFRFT的定义并推导了其模值平方的特性,研究了高斯白噪声背景下GFRFT的输出信噪比并给出了闭式表达式,进行了仿真实验并讨论说明了该方法的适用条件.仿真结果表明,该方法在低占空比的情况下可以有效地提高参数估计精度.

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