多普勒超声血流信号是一个非平稳的高斯随机过程,其时频分布与血流的速度及其变化有密切的关系。
The Doppler blood flow signal is inherently a nonstationary Gaussian random process whose time-frequency representation associates with the time-varying velocity of blood flow and its variations.
地面运动加速度功率谱模型为零均值的平稳高斯过程,描述为过滤白噪声施加于支撑各点。
The power spectral density function of ground acceleration can be described as filtered white noise applied on each support point.
以南京长江越江隧道初步设计方案(沉管段)为例,计算了其在高斯平稳随机过程地震动作用下的动力反应均方根值和纵向抗震动力可靠度。
The Nanjing Changjiang Tunnel is used as an example to compute the square-mean-root responses and the longitudinal aseismic reliabilities under stationary random earthquake loads.
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