It is shown that the differential conductance, average current and shot noise power are suppressed by the impurities and rough interface scattering.

研究表明，无序层中的杂质散射和粗糙界面散射都能抑制系统的微分电导、平均电流和散粒噪声功率。

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Then the influence on the average power spectrum and bispectrum of specklegrams caused by the photon noise, additive noise and more complex noises of other kinds in the detecting system .

介绍了所用的二维光子计数斑点像探测系统的性能，分析了探测系统的光子噪声、附加噪声和其它更复杂的噪声对斑点图的平均功率谱和重谱的影响。

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The power spectrum of the noise and signal are estimated by the average smooth periodogram method.

用平均平滑周期图法分别估算出信号与噪声的功率谱密度函数。

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