Optical fiber line, considered to be highly effective for signal transmission, sometimes suffer from fiber cut resulting in signal loss. It is highly desired that the exact cut location is found by use of fiber length so that entire fiber cable need not be replaced. An optoelectronic instrument OTDR (Optical Time-Domain Reflectometer) is used to find the position of the cut along the fiber length. There is the need to find the physical location on the GIS map which can provide the exact location where the replacement of fiber or maintenance activity has to be carried out. This paper proposes Vincenty’s formula to be used for fiber cut localization using GIS mapping which assumes the Earth to be oblate spheroid instead of exact sphere. This method will be highly accurate than any other method for exact localization of fiber cut.

被认为对信号传输非常有效的光纤线有时会遭受光纤切断的影响，从而导致信号丢失。高度希望通过使用光纤长度来找到准确的切割位置，从而无需更换整个光纤电缆。使用光电仪器OTDR（光学时域反射仪）来查找沿着光纤长度的切割位置。需要在GIS地图上找到实际位置，该位置可以提供必须进行光纤更换或维护活动的确切位置。本文提出了Vincenty公式，该公式可用于通过GIS映射进行的纤维切割定位，该公式假定地球是扁球体而不是精确球体。该方法将比其他任何方法都更精确，以精确定位纤维切割。