电子设计工程
電子設計工程
전자설계공정
ELECTRONIC DESIGN ENGINEERING
2012年
5期
51-54
,共4页
移频信号%欠采样%ZFFT%OMAP
移頻信號%欠採樣%ZFFT%OMAP
이빈신호%흠채양%ZFFT%OMAP
frequency shift signal%under sampling%ZFFT%OMAP
在轨道信号检测中，如何高精度的检测出当前的轨道移频信号一直是保证列车安全运行的重要课题。根据我国轨道移频信号的特点，在采用OMAPL137芯片为主的硬件平台下，采用欠采样和ZFFT的方法对移频信号进行检测，并阐述将算法在硬件平台下实现的流程，为便携式测试仪的设计提供基础。该系统实时性高，稳定性好，可扩展性强。
在軌道信號檢測中，如何高精度的檢測齣噹前的軌道移頻信號一直是保證列車安全運行的重要課題。根據我國軌道移頻信號的特點，在採用OMAPL137芯片為主的硬件平檯下，採用欠採樣和ZFFT的方法對移頻信號進行檢測，併闡述將算法在硬件平檯下實現的流程，為便攜式測試儀的設計提供基礎。該繫統實時性高，穩定性好，可擴展性彊。
재궤도신호검측중，여하고정도적검측출당전적궤도이빈신호일직시보증열차안전운행적중요과제。근거아국궤도이빈신호적특점，재채용OMAPL137심편위주적경건평태하，채용흠채양화ZFFT적방법대이빈신호진행검측，병천술장산법재경건평태하실현적류정，위편휴식측시의적설계제공기출。해계통실시성고，은정성호，가확전성강。
In the railway signal detection, how to detect the present railway frequency shift signal precisely has been always a hot issue on ensuring the train working safely. According to the characteristic of the railway frequency shift signal of our country, based on the hardware platform primarily on OMAPL137 chip, we use under the method of sampling and ZFFY to detect the frequency shift signal, and we also state how the algorithm realize on the hardware platform, which is the foundation of the design of the portable tester. This system is quite real-time, and it has a high stability and a strong extensibility.W
