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.
出处
《机械与电子》
2009年第7期59-61,共3页
Machinery & Electronics
关键词
FSK信号
欠采样
带通滤波
频率分
辨率
频谱校正
FSK signal
under - rate sampling
band - pass filter
frequency resolution
spectrum correction
