一种频域自适应滤波器的信号检测方法
A SIGNAL DETECTION METHOD USING FREQUENCYDOMAIN ADAPTIVE FILTER
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摘要: 正 近年来自适应滤波器已被用于信号处理。自适应滤波器与傅里叶变换组合在一起可以用来进行信号检测。把时域自适应滤波器的权进行傅里叶变换后可以做出信号和噪声的谱特性的估计。图1就是一个自适应线增强器与DFT联用的结构框图。同样这样的谱估值问题
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关键词:
Abstract: The detection performance of the frequency-domain adaptive filter is compared with the time-domain one, Comparisons are based on the computer digital simulation with a sinusoidal signal and white Gauss noise. The performance of the frequency and time-domain adaptive filters are shown to be the same for an unknown frequency signal, but for the detection of known frequency the frequency-domain adaptive filter length is much shorter to get the same detection probability. -
W. S. Burdic, IEEE Trans. on AES, AES-14(1978), 578.
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