文中通过直角坐标转换的方法，分析了一种三振子天线。
This paper analyses a triple pole antenna using orthogonal coordinate transform.
三个接收天线（接收闪电放电辐射的超高频脉冲）分别放在一个垂直边长为120米的直角等腰三角形的顶点，由到达天线的时间差来计算接收到的闪电脉冲的方向。
The three antennas which receive VHF impulses emitted by a lightning discharge are placed on the vertices of a right-angled isosceles triangle with perpendicular sides 120 meters in length.
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