The Testing Method of the Frequency Shift Keying Signals Based on DSP

摘要：

The FSK (Frequency Shift Keying) signals transmit safe driving message by track circuits in railway transportation. The testing method of this kind of signals in high resolution is such important means that guarantees safety. On the basis of the characteristics and analysis of FSK signals spectrum, this paper puts forward a high resolution testing method which is composed of a signal processing algorithm and hardware based on DSP. In order to resume the original signal from the sampling process and avoid FSK signals mixing, UST (Under-rate Sampling Technology) and FFT (Fast Fourier Transform Algorithm) were introduced in the algorithm. Meanwhile, the DSP module makes up the nucleus of the signal processing hardware, which mainly ensures a real-time ability of the algorithm with its rapid computation.

关键词： FSK testing frequency resolution DSP under-rate sampling real-time

作者: ZHAO Junmin YANG Ping ZHU Xinbo

作者单位: School of Mechatronics Engineering, University of Electronic Science and Technology of China, China

会议类型: 国际会议

会议名称: The First International Conference on Maintenance Engineering(首届维修工程国际学术会议)

会议地点: 成都

会议语种:英文

页码: 488-493

在线出版日期: 2006-10-15（万方平台首次上网日期，不代表论文的发表时间）