| 基于Chirp变换的快速离散时间尺度变换 |
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| 引用本文： | 江志红,程翥,王展.基于Chirp变换的快速离散时间尺度变换[J].国防科技大学学报,2007,29(5):77-80. |
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| 作者姓名： | 江志红 程翥 王展 |
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| 作者单位： | 国防科技大学,电子科学与工程学院,湖南,长沙,410073 |
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| 摘 要： | 提出了一种新的快速离散时间尺度变换算法。给出了离散时间信号尺度变换的构造表达式及其Chirp变换快速实现流程。讨论了Chirp变换实现中的参数选取准则,分析了Chirp变换的信号带宽问题。讨论了算法的运算效率并与其它算法进行了比较。仿真试验证明了本文算法的有效性。
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| 关 键 词： | 离散时间信号 时间尺度变换 Chirp变换 |
| 文章编号： | 1001-2486(2007)05-0077-04 |
| 收稿时间： | 2/8/2007 12:00:00 AM |
| 修稿时间： | 2007年2月8日 |
Fast Discrete Time Scale Transformation Based on Chirp Transform |
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| JIANG Zhihong,CHENG Zhu and WANG Zhan.Fast Discrete Time Scale Transformation Based on Chirp Transform[J].Journal of National University of Defense Technology,2007,29(5):77-80. |
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| Authors: | JIANG Zhihong CHENG Zhu and WANG Zhan |
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| Institution: | College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China |
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| Abstract: | A new fast discrete time scale transformation algorithm is presented and an appropriate expression of discrete time scale transformation is supplied.The expression can be calculated fast by using the chirp transform.The performances of the proposed algorithm are analyzed by comparing with other algorithms.The validity of the algorithm is shown by simulation results. |
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| Keywords: | discrete time signal time scale transformation Chirp transform |
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