高斯脉冲调制Chirp信号分数阶Fourier变换的解析表示  

Fractional Fourier Transform of Gauss Pulse Modulated Chirp Signal and Its Analytical Representation

作　　者：范瑜[1] 陈兰[2] 

机构地区：[1]常熟理工学院,江苏常熟215500 [2]东南大学软件学院,江苏苏州215123

出　　处：《现代电子技术》2009年第19期69-72,共4页Modern Electronics Technique

摘　　要：分数阶Fourier变换是Fourier变换的一种广义形式,揭示了信号从时域到频域变化过程中所呈现的特征,运用FrFT分析Chirp信号具有极佳的能量积聚效果。介绍分数阶Fourier变换的基本定义,给出高斯脉冲Chirp信号的FrFT以及最优化高斯脉冲Chirp信号分析角度,对于该类信号的低噪声检测与参数估计具有良好的应用前景。Fractional Fourier transform is a version of generalized Fourier transform, which reveals the features of signal from time and frequency simultaneously. The analysis of Chirp signal using FrFT can bring excellent energy accumulation effect. The definition of fractional Fourier transform is presented. Fractional Fourier transform of Gauss pulse Chirp signal is analyzed and the design of optimal angle is also studied in Gauss pulse modulated Chirp signal analysis,which have a good future in signal detection and parameter estimation when in low signal noise ratio situation. Keywords：

关 键 词：FOURIER变换 分数阶FOURIER变换 CHIRP信号 高斯脉冲调制Chirp信号 

分 类 号：TN911[电子电信—通信与信息系统]