单边带解调的xinlinx建模，实现完整的解调同步和下变频-Single sideband the demodulation of xinlinx modeling, to achieve complete demodulation synchronization and downconversion

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.)