摘要
ZPW-2000轨道电路移频信号的频率参数具有重要意义,目前移频信号载频、低频计算方法较为成熟,但移频信号频偏计算方法较少。描述通过信号频域计算轨道移频信号频偏的方法,并进行仿真实验,通过本算法解析的频偏与标准值的最大误差为0.003 4 Hz,满足对轨道电路信号解析的要求。
The frequency parameters of the ZPW-2000 track circuit frequency-shift signals are of great signifi cance.Currently,the calculation methods for the carrier frequency and low frequency of the frequency-shift signals are relatively mature,but the methods for calculating the frequency off set of the frequency-shift signals are relatively limited.This paper mainly describes the method of calculating the frequency off set of the track circuit frequency-shift signals using the frequency-domain method,and conducts simulation experiments.The maximum error between the frequency off set obtained through the described calculation method and the standard value is 0.0034Hz,which meets the requirements for analyzing the signals of the track circuits.
出处
《铁路通信信号工程技术》
2024年第S1期67-70,共4页
Railway Signalling & Communication Engineering
关键词
轨道电路
移频信号
频域
频偏
track circuit
frequency-shift signal
frequency domain
frequency off set
