基于稀疏重构的铁路货车TFDS网络传输时延估计  

Transmission delay estimation of railway freight car TFDS network based on sparse reconstruction

作　　者：马子钦 MA Ziqin(National Railway Equipment Company with Limited Liability,Beijing 100011,China)

机构地区：[1]国能铁路装备有限责任公司,北京100011

出　　处：《电子设计工程》2024年第1期147-151,共5页Electronic Design Engineering

基　　金：国能铁路装备有限责任公司科技项目(TZKY-21-01)。

摘　　要：铁路货车TFDS网络传输时延估计过程中易受到噪声干扰,造成估计结果不精准,故提出基于稀疏重构的铁路货车TFDS网络传输时延估计方法。分析铁路货车TFDS网络传输集成信号,以信号稀疏表达为基础计算增益稀疏向量,完成信号预处理。根据稀疏字典原子匹配原理得到稀疏重构信号输出结果,根据信号权重计算铁路货车TFDS网络传输时延估计值。实验结果表明,该方法无噪声干扰下时延为350 ns,有噪声干扰时延变化范围为310~380 ns,与实际值一致,估计结果更精准。In the process of TFDS network transmission time delay estimation for railway freight cars,it is easy to be disturbed by noise,which results in inaccurate estimation results.A method of TFDS network transmission time delay estimation for railway freight cars based on sparse reconstruction is proposed.The integrated signal analysis of TFDS network transmission of railway freight cars is analyzed.The gain sparse vector is calculated based on the sparse expression of the signal,and the signal preprocessing is completed.According to the principle of sparse dictionary and atomic matching,the output result of sparse reconstructed signal is obtained.According to the signal weight,the transmission delay estimation of railway freight car TFDS network is calculated.The experimental results show that the time delay of this method is 350 ns without noise interference and 310~380 ns with noise interference,which is consistent with the actual value and the estimation result is more accurate.

关 键 词：稀疏重构 铁路货车 TFDS网络 时延估计 

分 类 号：TN925.5[电子电信—通信与信息系统]