摘要
针对近年来提出的通过直接采样实现数字化正交相干检波的方法 ,分析了其基本原理 ,并用系统的观点解释了一种新的实现方法 ,阐明了该方法的基本原理及适用条件 ;理论分析及仿真结果表明 。
The essential principles are analyzed pointing at the method of realizing digital quadrature coherent detection by direct sampling,which has been put forward recent years,and a new realizing method is explained with a systematic view.Furthermore,its principles are expounded,and its scope of application is indicated.The results of theoretical analysis and simulation show this method can meet the needs of high performance digital process.
关键词
中频采样
正交相干检波
低通滤波器
数字化
sampling of IF signal
quadrature coherent detection
low_pass filter
