Our results show that the level crossing curvature can cause location error of the Laplacian, particularly when the edges with large curvatures and small gradients.
首先导出了拉普拉斯、二阶梯度方向导数和侧向曲率三者之间的关系式，指出由于侧向曲率的影响，拉普拉斯在检测弯曲边界时必然产生定位误差。
Moreover, there is still a large error area of probability ellipse, which makes the precise location cannot available.
而是存在一个不小的概率椭圆误差区域，因而无法精确确定被测目标的真实位置。
Traveling wave dispersion in the parallel line is more complex than that in the single line and is an important reason why the fault location error is large for traveling wave method.
行波色散是造成故障测距误差大的重要原因：利用行波故障定位时要考虑采用多相行波数据。
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