|
|||||
|
|
| 用实验法对450MHz最小可用接收电平质量的分析 | |
| 引用本文： | 陈燕龙,阮一凡,王俊飞,王惠生.用实验法对450MHz最小可用接收电平质量的分析[J].铁道技术监督,2011,39(11):22-24. |
| 作者姓名： | 陈燕龙 阮一凡 王俊飞 王惠生 |
| 作者单位： | 1. 中国铁道科学研究院通信信号研究所,北京,100081 2. 铁道部产品质量监督检验中心,北京,100081 3. 铁道部基础设施检测中心,北京,100081 |
| 摘 要： | 无线信号在空间传播过程中,由于会发生多径反射和受到多普勒效应的影响,其振幅、频率和相位都会发生失真。通过对模拟出失真的450MHz最小可用接收电平的测试表明,在不考虑噪声影响和频率容差时,机车台音频输出信纳比大于20dB,符合TB/T3052—2002《列车无线调度通信系统制式及主要技术条件》的规定。 |
| 关 键 词： | 无线通信 多径衰落 阴影效应 多普勒效应 最小可用接收电平 |
Analyzing the Quality of 450MHz Minimum Useable Receiving Level By Experimental Method |
|
| Chen Yanlong,Ruan Yifan,Wang Junfei,et al.Analyzing the Quality of 450MHz Minimum Useable Receiving Level By Experimental Method[J].Railway Quality Control,2011,39(11):22-24. | |
| Authors: | Chen Yanlong Ruan Yifan Wang Junfei |
| Institution: | Chen Yanlong,Ruan Yifan,Wang Junfei,et al |
| Abstract: | When radio signal propagates in space,distortions may occur in amplitude,frequency and phase due to multi-path reflections and Doppler Effect.By testing the distorted signal of 450 MHz minimum useable receiving level through simulation,the authros conclude that the audio frequency output SINAD of locomotive radio is higher than 20 dB and comply with the provision of TB/T 3052—2002 when ignoring the influence of noise and frequency error. |
| Keywords: | Radio Communication Multi-path Fading Shadow Effect Doppler Effect Minimum Useable Receiving Level |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |