国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

The bottleneck of high-speed signals sampling system is that it cannot sample directly higher frequency signal because of lower analog input bandwidth of its ADC. In order to resolve this problem, a kind of sampling model based on stochastic demodulation is presented in combination with the development of a high-speed and high-precision data recorder, the stochastic demodulation sampling is then transformed into a mathematical model that can perform matrix calculation through matric theory. The model achieves the high-speed analog signal sampling with low-speed A / D converters by means of stochastic demodulation and anti-aliasing filter. According to the model of sampling, a reconstruction method of sampling based on least squares is proposed, and its reconstruction error is quantitatively analyzed. Finally, the sampling model is proved by simulation, it is showed that the sampling system is effective, the sampling error is better than that of a single ADC.