由于3g信号频率高，在地铁中的泄漏电缆损耗和空间损耗将大大增加，为了达到覆盖要求，必然要引入中继放大。
Repeaters have to be employed in metros to meet the coverage requirements because leakage cables and free Spaces are much more spoiled due to high frequency of 3g signal.
分流电阻负载通常是由电缆泄漏电阻引起的，如图2 -4所示。
Cable leakage resistance is a common source of shunt resistance loading, as shown in Figure 2-4.
然而，由于电缆泄漏电阻（RL）与RS并联，实际测量的电阻（RM）有所降低，如图2-34b的并联等效电路所示。
However, since the cable leakage resistance (RL) is in parallel with RS, the actual measured resistance (RM) is reduced, as shown in the parallel equivalent circuit of Figure 2-34b.
当电缆的长度增加时，其电缆电阻、电容和泄漏电流等参数也会变化。
Parameters like cable resistance, capacitance, and leakage currents change as cable length increases.
监测系统工作原理是通过监测电缆放电信号和直流泄漏电流信号综合评估电缆绝缘状态。
The working principle of the developed monitoring system is to assess comprehensively the insulation status of DC feeder cable through monitoring discharge signal and DC leakage current signal.
监测系统工作原理是通过监测电缆放电信号和直流泄漏电流信号综合评估电缆绝缘状态。
The working principle of the developed monitoring system is to assess comprehensively the insulation status of DC feeder cable through monitoring discharge signal and DC leakage current signal.
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