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Determining wave propagation characteristics of MV XLPE power cable using time domain reflectometry technique
Cross-linked polyethylene distribution power cables time domain reflectometry propagation constant attenuation constant phase constant propagation velocity
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2011/3/22
In this paper, the wave propagation characteristics of single-phase medium voltage (MV) cross-linked polyethylene (XLPE) power cable are determined using time domain reflectometry (TDR) measurement te...
测试土壤含水率和电导率的时域反射仪系统(Design of Time Domain Reflectometry for Application of Soil Moisture and Bulk Electrical Conductivity Measurements)
土壤 含水率 电导率 相对介电常数
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2009/8/11
研究了用于土壤参数测试的时域反射仪(TDR)系统原理与电路实现方法。根据系统设计要求设计出时域反射仪样机,该样机脉冲发生电路产生140ps上升沿的时域脉冲,接收电路等效采样精度为8.69ps,并设计了时域反射仪系统控制程序,给出了程序的系统控制和数据处理流程图。利用研制的TDR样机对两种土壤样本的相对介电常数进行了测试,反演了土壤样品的体积含水率,同时利用采集波形反演计算出不同湿度土壤样品的体积含...