Aim In order to solve the trouble of the lack of forward secrecy and intermediator attack in current WTLS protocol.

目的为解决目前WTLS协议中缺乏前向安全性、无法抵抗中间人攻击的问题。

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When grounding fault happens at the time when current is zero, the transient value is too small, in order to prevent it, the paper brings forward the current increment method to select faulty line.

为防止在电流过零点附近发生的接地故障时的暂态量太小，论文提出利用电流增量进行故障选线。

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This paper puts forward the coordinate calculation method, which applys the optimization algorithm to compute the move distance of the current railway curve in order to rebuild the current curve.

提出了利用坐标法进行测设既有曲线并应用优化计算的原理进行既有曲线拨距计算。

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