车载FSK信号载频和调制频率的实时检测方法  

A Realtime Detection Approach of Carrier and Modulating Frequency of Tramroad FSK Signal

作　　者：李沨[1] 李如强[1] 黄凯[1] 

机构地区：[1]武汉理工大学机电工程学院,湖北武汉430070

出　　处：《机械与电子》2009年第7期59-61,共3页Machinery & Electronics

摘　　要：根据车载FSK信号高频率分辨率和实时性检测要求,以法国UM71轨道移频信号为例,分析了信号的频谱能量分布。提出了基于欠采样、带通滤波和频率校正技术的轨道移频信号载频和调制频率的实时检测方法,并列出具体的检测步骤,最后通过仿真实例验证了实时检测方法的有效性。According to the demand of high frequency resolution and real time detection of Tramroad FSK signal, the spectrum energy distribution of the France UM71 FSK signal,taken as an exampie, was analyzed. The real time detection approach of carrier and modulating frequency of FSK signal was proposed based on under- rate sampling, band -pass filter and spectrum correction, following by the concrete detection steps. At last,the simulation result of one example illustrated the effectiveness of proposed approach.

关 键 词：FSK信号 欠采样 带通滤波 频率分 辨率 频谱校正 

分 类 号：TP206.1[自动化与计算机技术—检测技术与自动化装置]