| 关于谐波随机过程的四阶平稳性与四阶遍历性的一个结果 |
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| 引用本文： | 毛用才.关于谐波随机过程的四阶平稳性与四阶遍历性的一个结果[J].系统工程与电子技术,1995(8). |
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| 作者姓名： | 毛用才 |
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| 作者单位： | 西安电子科技大学雷达信号处理实验室 |
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| 摘 要： | 本文分析了由随机谐波构成的复信号的四阶矩之有限数据估计，得到了四阶平稳和四阶遍历的条件，给出了估计误差及其方差，以及它们大样本的极限值的显式表达式，最后考虑了它的一个特例，说明这一情形下的方差由遍历部分和非遍历部分组成。
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| 关 键 词： | ￣＋平稳性，￣＋遍历性，谐波，信号处理。 |
A Result for Fourth-Order Stationarity and Ergodicity of a Harmonic Random Process |
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| Mao Yongcai.A Result for Fourth-Order Stationarity and Ergodicity of a Harmonic Random Process[J].System Engineering and Electronics,1995(8). |
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| Authors: | Mao Yongcai |
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| Abstract: | The finite data estimates of the complex fourth-order moments of a signal consisting of random harmonics are analysed.Conditions for the fourth-order stationarity and ergodicity are obtained.Explicit formulas for the estimation error and its variance as Well as their limiting large sample values are derived .Finally,these results are stated for a special case and the variance is shown to comprise an ergodic and a nonergodic part. |
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| Keywords: | Harmonic random process Fourth-order stationarity Fourth-order ergodicity |
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