本文为了满足这一要求，对线路几何不平顺的高精度测量方法和系统进行了研究。
In this paper, the measurement method and system for rail track geometric irregularities is studied based on this problem.
这里三次样条函数中参数几何意义是沿曲线路径单调增长的距离。
The geometric meaning of the parameter is the mono increasing distance along the curve path.
本文研究了如何由直流线路的几何参数计算其模参数的方法，对时域故障测距原理进行了仿真验证。
On the basis of researching of the way of calculating mode parameters of transmission line form its geometric parameters, the feasibility of time domain fault location method is validated.
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