信息与控制2018，Vol.47Issue(6)：641-649,9.DOI:10.13976/j.cnki.xk.2018.7426
改进型高压脉冲轨道电路数字滤波算法
Modified Digital Filter Algorithm for High-voltage Impulse Track Circuit
摘要
Abstract
According to the properties of high-voltage impulse (HVI) track circuit, we use the least square (LS) method, the moving average (MA) filtering, and the MA filtering with endpoint smoothing on the basis of simulation model to smoothen the HVI signal. To eliminate the"end-effect, "we propose a modified filtering method combining the MA filtering and LS method based on the comparison of the above three methods.Then, these four filtering methods are processed with a simulation model under random noise, periodic impulse interference, and Gaussian noise conditions. Compared with the other three methods, the modified filtering method improves the signal noise ratio (SNR), without requiring a large amount of calculation. Finally, the experimental results show that the modified filtering method is reliable and effective, and can be applied to identify and detect HVI signals in an HVI track circuit system.关键词
高压脉冲轨道电路/仿真模型/最小二乘法/滑动平均滤波Key words
high-voltage impulse track circuit/simulation model/least square (LS) method/moving average filter分类
信息技术与安全科学引用本文复制引用
杨媛,袁蕾,王庆军,王佳旭..改进型高压脉冲轨道电路数字滤波算法[J].信息与控制,2018,47(6):641-649,9.基金项目
高校院所人才服务企业工程资助项目(2017080CG/RC043(XALG009) ) （2017080CG/RC043(XALG009）
