虚拟示波器,硬件基于NI系列AD采集卡,软件基于Matlab7.9-virtual oscilloscope hardware config: National Instrument A/D card software config: Matlab 2009以上版本

数字正交下变频 现采集AD的数据，然后通过MATLAB加载，最后实现DDC下变频。(Digital Orthogonal Downconversion Now collect AD data, then load it through MATLAB, and finally realize DDC down conversion.)