给出适合铁路列车运行噪声特点的几何发散损失计算方法。
A calculation method for geometrical spreading loss is provided which is adapted to the characteristics of running trains noise.
提出一种渐变式阈值选择与量化策略，以适应信号与噪声特点。
To fit in with the features of signal and noise, a strategy of gradual changing threshold selection and quantization was presented.
针对红外图像和微光图像的不同噪声特点，设计实用、实时的噪声处理系统显得十分重要。
It is very important to design practical and real-time processing hardware systems, which can be applied to both infrared and LLL images.
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