Results show that under small Mach number the main source of discrete noise is the fluctuating force, which gives a guide for cutting discrete noise down.
研究表明，低马赫数情况下叶轮离散噪声主要是由脉动力造成，为降低低马赫数下的叶轮离散噪声提供了参考。
2
To resolve the non-gauss noise problem such as wave fluctuating acutely at sea, a new algorithm for extracting object contour is presented.
针对波浪持续起伏较大的非高斯噪声，提出了一种目标轮廓提取的新方法。
3
The extent of inventory fluctuating induced by different smoothing forecasting model can be measured by noise bandwidth, and the inventory fluctuating can be reduced by matched filtering.