一種頻域自適應(yīng)濾波器的信號(hào)檢測(cè)方法
A SIGNAL DETECTION METHOD USING FREQUENCYDOMAIN ADAPTIVE FILTER
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摘要: 正 近年來(lái)自適應(yīng)濾波器已被用于信號(hào)處理。自適應(yīng)濾波器與傅里葉變換組合在一起可以用來(lái)進(jìn)行信號(hào)檢測(cè)。把時(shí)域自適應(yīng)濾波器的權(quán)進(jìn)行傅里葉變換后可以做出信號(hào)和噪聲的譜特性的估計(jì)。圖1就是一個(gè)自適應(yīng)線增強(qiáng)器與DFT聯(lián)用的結(jié)構(gòu)框圖。同樣這樣的譜估值問(wèn)題
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關(guān)鍵詞:
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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