In a low light level wavefront sensor with image intensifier, the randomnoise of CCD output image is inhibited by delay correlation algorithm.
在带像增强器的微光波前传感器中，采用延时相关算法抑制CCD输出图像的随机噪声。
2
Random medium is closer to the actual medium, when the level of heterogeneous is greater than 5%, the reflection signal will be submerged in scatter noise.
随机介质与实际介质更接近，当不均匀程度大于5%或更大时，散射噪声将淹没矿体有效反射信号。
3
This paper introduces one item named variance rate of gray level and improves the maximum-minimum method by simplifying the noise examination process for suppressing the random impulsive noise.