| 分数阶傅里叶变换在Chirp调制信号中的应用 |
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| 引用本文： | 刘洋,刘争红,林基明.分数阶傅里叶变换在Chirp调制信号中的应用[J].信阳师范学院学报(自然科学版),2012(2):178-181. |
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| 作者姓名： | 刘洋 刘争红 林基明 |
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| 作者单位： | 桂林电子科技大学信息与通信学院 |
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| 基金项目： | 广西省自然科学基金项目(0991018z) |
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| 摘 要： | 利用分数阶傅里叶变换离散算法的定义和量纲归一化原理,分析了一种将连续FRFT直接离散化的算法,并对该算法在处理Chirp信号中存在的不足进行了改进,简化了该算法的计算量.研究了基于FRFT的Chirp信号的解调过程,确定了能量聚集的最优分数阶阶次.
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| 关 键 词： | 分数阶傅里叶变换 Chirp信号 离散算法 |
Application of Fractional Fourier Transform in Chirp Modulation Signal |
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| LIU Yang,LIU Zheng-hong,LIN Ji-ming.Application of Fractional Fourier Transform in Chirp Modulation Signal[J].Journal of Xinyang Teachers College(Natural Science Edition),2012(2):178-181. |
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| Authors: | LIU Yang LIU Zheng-hong LIN Ji-ming |
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| Institution: | *(School of Information and Communication Engineering,Guilin University of Electronic Technology,Guilin 541004,China) |
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| Abstract: | An algorithm which can directly disperse a continuous FRFT was analyzed by the use of the discrete FRFT algorithm definition and the principle of the dimension normalization.Meanwhile,the shortcomings of the processing chirp signal were improved by using this algorithm,and the algorithm calculation was simplified.The demodulation of chirp signal was studied based on FRFT,and the optimal fractional fourier order of chirp signal energy concentration were also determined. |
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| Keywords: | fractional fourier transform chirp signal discretization method |
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