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Correction method for detection of the frequencies of railway fsk signals (EI CONFERENCE)

文献类型：会议论文

作者Yu J.
出版日期2008
会议名称2008 9th International Conference on Signal Processing, ICSP 2008, October 26, 2008 - October 29, 2008
会议地点Beijing, China
关键词In order to acquire the information of railway binary frequency-shift keying signals which include upper/down side frequencies and base low-frequency with high-accuracy a novel frequency detection algorithm for France UM-71 system is proposed. Combining fast Fourier transform with the ratio correction method the carrier frequency and the base frequency are obtained. Furthermore the hardware consumption has been decreased. And it possesses the advantage of simple algorithm and fast operation speed. Comparing with the detection of the base frequency the upper/down side frequency of railway signal is more difficult. Based on spectrum analysis and the spectrum correction a new method which adopts the sliding window is put forward in this paper. The absolute differences between the upper side frequencies and the down side frequencies obtained are regarded as the criterion for judgment. Then the set of data in which the maximum absolute value is is to be the result of the upper/down side frequency. Because the sliding window will go through every stage when the upper/down side frequency changes therefore it is not sensitive enough to the position of data which need to be transformed. Using the method mentioned above the experiment results show that the accuracy requirement of the side frequency is satisfied well. 2008 IEEE.
页码166-170
收录类别EI
源URL[http://ir.ciomp.ac.cn/handle/181722/33069]  
专题长春光学精密机械与物理研究所_中科院长春光机所知识产出_会议论文
推荐引用方式
GB/T 7714		 Yu J.. Correction method for detection of the frequencies of railway fsk signals (EI CONFERENCE)[C]. 见:2008 9th International Conference on Signal Processing, ICSP 2008, October 26, 2008 - October 29, 2008. Beijing, China.

入库方式： OAI收割

来源：长春光学精密机械与物理研究所

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