| 时－频分析中的不确定性原理 |
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| 引用本文： | 殷勤业,黄朝云.时－频分析中的不确定性原理[J].西安交通大学学报,1996(9). |
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| 作者姓名： | 殷勤业 黄朝云 |
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| 作者单位： | 西安交通大学 |
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| 基金项目： | 国家教委跨世纪人才基金 |
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| 摘 要： | 不确定性原理是时－频分析中最重要的概念之一，是构造联合分布时所要依据的准则之一．它向人们揭示了傅里叶变换对之间的关系：较窄的时间持续期产生较长的频率持续期；而较长的时间持续期产生较短的频率持续期；时间波形的宽度和频谱宽度不可能同时任意小
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| 关 键 词： | 时间持续期 带宽 傅里叶变换 不确定性原理 |
CONCEPT OF THE UNCERTAINTY PRINCIPLE IN TIME AND FREQUENCY ANALYSIS |
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| Yin,Qinye,Huang,Zhaoyun.CONCEPT OF THE UNCERTAINTY PRINCIPLE IN TIME AND FREQUENCY ANALYSIS[J].Journal of Xi'an Jiaotong University,1996(9). |
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| Authors: | Yin Qinye Huang Zhaoyun |
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| Abstract: | As a fundamental criterion, the Uncertainty Principle acts as a key role in Time and Frequency Analysis. It gives us the basic concept of the relationship between a pair of Fourier transforms. When the time duration is narrow, the bandwidth will be wide, and vise versa. Thus duration and bandwidth would not be arbitrarily narrow at the same time. |
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| Keywords: | duration bandwidth Fourier transform uncertainty principle |
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