摘要
文中对比模拟电路中实现调幅信号解调的两种常用方法 ,通过数学推导 ,给出了软件处理的算法依据 ,同时给出了利用同态滤波的思想实现调幅信号解调的原理。并在LabWindows/CVI软件平台下利用其提供的功能强大的信号分析函数库采用 3种不同方法实现调幅信号解调。最后给出仿真实例 ,并得出调幅信号解调的软件实现优于硬件实现的结论。
Compared to two common methods of realizing demodulation of AM signal in analogue circuit,algorithm basis of software processing is presented through mathematics derivation and principle for demodulation of AM signal based on Homomorphic Filter is given.Also,the software realization of demodulation of AM signal is performed using powerful Advanced Analysis function Library provided by LabWindows/CVI.Finally a simulation example is given to show that the software realization is superior to hardware realization for demodulation of AM signal.
出处
《仪表技术与传感器》
CSCD
北大核心
2002年第8期23-25,47,共4页
Instrument Technique and Sensor
