这是关于图像调制传递函数MTF计算的一篇优秀文章,可以处理卫星图像,提高图像清晰度-This is on the image modulation transfer function MTF calculated an excellent article, you can deal with satellite imagery, improve image clarity
采样率小于一个连续时间信号最大频率的2倍时就叫undersampling,欠采样,根据抽样定理,当fs>=2fmax,也就是oversampling,过采样时,数字信号才能重建成原来的模拟信号,欠采样重建会发生混叠-Sampling rate of a continuous-time signal is less than the maximum frequency of 2 times is called undersampling, bandpass sampling, according to sampling theorem, when fs