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snipher950
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- ·ÒëEPI: 3
- Ó¦Öú: 2 (Ó×¶ùÔ°)
- ½ð±Ò: 3024.6
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- ÔÚÏß: 22.5Сʱ
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wypward:лл²ÎÓë 2010-07-02 15:37:34
moonlove(½ð±Ò+5, ·ÒëEPI+1):лл 2010-07-03 22:51:44
moonlove(½ð±Ò+5, ·ÒëEPI+1):лл 2010-07-03 22:51:44
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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, |
2Â¥2010-07-02 15:25:51













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