华东师范大学学报(自然科学版) ›› 2007, Vol. 2007 ›› Issue (1): 119-126.

• 物理学 电子学 • 上一篇    下一篇

HFT在非平稳信号组份分析中的应用

姚红玉1,2， 刘粤钳3
  

  1. 1.华东师范大学 教育信息技术系，上海 200062； 2.安徽师范大学 教科院，安徽 芜湖241000； 3.中国传媒大学 应用语言学系，北京 100024
  • 收稿日期:2005-09-25 修回日期:2006-04-19 出版日期:2007-01-25 发布日期:2007-01-25
  • 通讯作者: 姚红玉

Separation of Various Components of Nonstationary Signal Using Half Fourier Transform (Chinese)

YAO Hong-yu1,2, LIU Yue-qian3
  

  1. 1. Department of Educational Technology, East China Normal University, Shanghai 200062, China； 2. School of Educational Science, Anhui Normal University, Wuhu Anhui 241000, China； 3. Department of Applied Linguistics, Communication University of China, Beijing 100024, China
  • Received:2005-09-25 Revised:2006-04-19 Online:2007-01-25 Published:2007-01-25
  • Contact: YAO Hong-yu

摘要： 根据半傅立叶变换(HFT)的基本原理，以遥感探测一个有限闭合圆柱为例，应用HFT分析其暂态散射响应的各组份. 实验结果表明，在高信噪比的情况下，HFT能够成功地从被测物的暂态散射响应中优化分离出早期响应的似脉冲分量和晚期的衰减正弦波分量.

关键词: 半傅立叶变换, 矩阵束法, 高斯脉冲, 衰减正弦波, 半傅立叶变换, 矩阵束法, 高斯脉冲, 衰减正弦波

Abstract: This paper used the Half Fourier Transform to analyze various components of
a nonstationary signal. By MATLAB simulation, a practical example, remote
sensing a finite cylinder, was tested to verify the proposed algorithm. The
result showed that in the higher SNR, the proposed algorithm can perfectly
meet our expectation: to separate impulse like components from damped exponentials.

Key words: matrix pencil method, Gaussian pulse, damped sinusoid, half Fourier transform, matrix pencil method, Gaussian pulse, damped sinusoid

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