基于过采样的轨道移频信号检测算法设计与实现  

The Design and Implementation of Track Frequency Shift Signal Detection Algorithm based on Oversampling

作　　者：刘鹏飞 

机构地区：[1]绵阳市维博电子有限责任公司,四川绵阳621000

出　　处：《自动化与仪器仪表》2016年第12期236-238,共3页Automation & Instrumentation

摘　　要：提出了一种基于过采样的ZPW-2000轨道移频信号检测算法,并在高性能的单芯片微控制器STM32F405RGT6上利用该算法实现了对ZPW-2000移频信号的频率全参数检测。本文依据信号的频域分析理论,将过采样、ZFFT频谱细化及频率校正技术有机结合起来,通过等波纹数字滤波器和频率校正算法提升上下边频的检测精度,利用BLACKMAN窗函数提高了调制频率的检测精度,具有很高的应用价值。测试结果证明,上下边频的检测误差不超过±0.1Hz,调制频率的检测误差不超过±0.01Hz。A detection algorithm of ZPW-2000 track frequency shift signal based on over-sampling is proposed and realized on highperformance single microcontroller STM32F405RGT6,to achieve the whole parameter frequency detection of ZPW- 2000 FSK signal. On the basis of signal frequency domain analysis,this paper integrated oversampling,ZFFT with frequency correction technology as a whole,improved the upper and lower side frequency detection accuracy by means of equiripple digital filter,enhanced the modulation frequency precision through BLACKMAN windows and had high application value.The experimental result shows that the upper and lower side frequency detection error is less than 0. 1Hz,and modulation frequency detection error does not exceed ± 0. 01 Hz.

关 键 词：过采样 等波纹数字滤波器 ZFFT BLACKMAN窗 

分 类 号：U284.47[交通运输工程—交通信息工程及控制]