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moonlove木蟲 (著名寫手)
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[交流]
求翻譯一段話,漢譯英
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對于一個(gè)隨機(jī)過程來講,它在頻域內(nèi)的特征用功率譜密度函數(shù)(PSD)來表示它的統(tǒng)計(jì)平均譜特性。功率譜密度函數(shù)與自相關(guān)函數(shù)是一對傅里葉變換,其定義如下: 設(shè)從x(t)中取出長度為T的區(qū)間,用xT(t)表示,其傅里葉變換為XT(t),這時(shí)X(t)的功率譜密度函數(shù)為: |

木蟲 (正式寫手)
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For a stochastic process, the power spectral density function PSD is used to express its average spectral charateristcs. The PSD and the autocorrelation function are a pair of Fourier functions. The definition is as following, Assume an interval with length T from x(t) is expressed as xT(t). If its Fourier transform is XT(t), then the PSD of X(t) is, |
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