基于LMS自适应滤波的PCM/FM信号解调方法  

PCM/FM Demodulation Method Based on LMS Adaptive Filtering

作　　者：秦国领 朱巍巍[1] 魏笑[1] 牛攀峰[1] 

机构地区：[1]酒泉卫星发射中心,酒泉732750

出　　处：《遥测遥控》2016年第4期54-59,共6页Journal of Telemetry,Tracking and Command

摘　　要：通过分析PCM/FM信号特性,利用LMS自适应滤波算法跟踪信号频率,检测误差信号包络,实现信号解调。通过分析影响解调性能的关键参数,基于蒙特卡洛仿真得到相应的最优参数。与传统的叉积鉴频解调相比,基于LMS自适应滤波的PCM/FM信号解调方法抗干扰能力更强,且实现较为方便,具有一定的应用价值。This paper proposes a new demodulation method for PCM/FM signal based on LMS adaptive filtering algorithm, which realizes signal demodulation through error signal＇s envelope detection. The key parameters which have great effect on the demodulation performance are analyzed, and the optimized parameters are gotten by Monte Carlo simulation. Compared with the traditional cross-product frequency tracking method, the PCM/FM demodulation method based on LMS adaptive filtering has better anti-jamming performance and is easier for implementation.

关 键 词：LMS自适应滤波 PCM/FM 解调 

分 类 号：TN713[电子电信—电路与系统]