| 扫频滤波器在分数阶Fourier域的实现 |
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| 引用本文： | 臧怀刚,刘晓丽,刘好明. 扫频滤波器在分数阶Fourier域的实现[J]. 电脑与信息技术, 2007, 15(5): 60-62 |
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| 作者姓名： | 臧怀刚 刘晓丽 刘好明 |
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| 作者单位： | 燕山大学电气工程学院,河北,秦皇岛,066004;山东理工大学机械工学院,山东,淄博,255091 |
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| 摘 要： | 在研究分数阶Fourier城滤波基本理论的基础上,提出了扫频滤波器的工作原理和系统表示.通过对LFM信号和高斯白噪声分离效果仿真,发现分离后信噪比得到了较大提高.仿真实验表明,所提出的分数阶城扫频滤波器在有噪声干扰的情况下能得到较好的干扰分离和滤波效幕.
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| 关 键 词： | 分数阶Fourier变换 滤波 扫频滤波器 |
| 文章编号： | 1005-1228（2007）05-0060-03 |
| 修稿时间： | 2007-07-03 |
Implementation of the Swept-frequency Filter's in Fractional Fourier Domain |
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| ZANG Huai-gang,LIU Xiao-li,LIU Hao-ming. Implementation of the Swept-frequency Filter's in Fractional Fourier Domain[J]. Computer and Information Technology, 2007, 15(5): 60-62 |
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| Authors: | ZANG Huai-gang LIU Xiao-li LIU Hao-ming |
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| Affiliation: | 1. Department of Electrical Engineering,Yanshan University,Qinhuangdao,Hebei 066004,China;2.Department of MechanicalEngineering,Shandong University of Technology,Zibo,Shandong 255091 ,China |
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| Abstract: | On the basis of researching theories of fractional Fourier transforms area filtering,the working theories and system appearance of swept-frequency filter are pointed out.Seen from the emulation results separating LFM signal and Gauss white noise,the SNR is preferably improved after separating.Emulation results indicate that the swept-frequency filter in fractional Fourier transform can obtain better effect of separating filtration and interfere in the noise situation. |
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| Keywords: | fractional Fourier transform filtering swept-frequency filter |
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