| 随机噪声的频域滤波方法 |
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| 引用本文： | 刘保中.随机噪声的频域滤波方法[J].战术导弹控制技术,2008(1). |
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| 作者姓名： | 刘保中 |
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| 作者单位： | 北京自动化控制设备研究所; |
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| 摘 要： | 提出了一种新的滤波方法。该方法的基本思路是,将时域中被噪声污染的测量信号通过傅里叶变换转换到频域中去,一般来说,测量信号和噪声的功率谱在频域中是不重合的。接着,在频域中将噪声谱删除,只剩下测量信号的功率谱。然后,再将测量信号的功率谱通过傅里叶反变换,转回到时域中去。这样,就最终实现了测量信号与噪声的分离。
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| 关 键 词： | 随机噪声 频域 时域 傅里叶变换 |
Filtering method based on frequency domain of random noise |
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| Liu Baozhong.Filtering method based on frequency domain of random noise[J].Control Technology of Tactical Missile,2008(1). |
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| Authors: | Liu Baozhong |
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| Affiliation: | Beijing Institute of Automatic Control Equipment;Beijing 100074;China |
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| Abstract: | A new filtering method is presented.The basic principle is that those measuring signals polluted by noise are transformed to the frequency domain by Fourier thansform.Commonly,the power spectrum of measuring signals will not overlap that of noise.The power spectrum of noise is deleted in the frequency domain,so that of measuring signals will be left.Then,the power spectrum of measuring signals is transformed to time domain by the inverse Fourier transform.Last,the measuring signals are separated from noise. |
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| Keywords: | Random noise Frequency domain Time domain Fourier transform |
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