| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of measuring three-dimensional positions of a plurality of wires forming an aerial train line, by which a location of missing is properly complemented in the case where measurement data are partially missed.SOLUTION: At a length direction position where two-dimensional position data are missed, approximate straight lines of three-dimensional position data of wires before and behind a location of missing are determined. First of all, a three-dimensional shortest distance between longitudinal two approximate straight lines is determined and in the case where the shortest distance is equal to or less than a predetermined value, these wires are determined as one line to be connected. Further, in the case where a difference between gradients of the longitudinal two approximate straight lines in a height direction is equal to or less than a predetermined value, these wires are determined as one trolley wire with sufficient certainty and in the case where a difference between the gradients of the longitudinal two approximate straight lines in a lateral direction is equal to or less than a predetermined value, these wires are determined as one catenary wire with sufficient certainty. The location of missing is then connected by using approximate straight lines of wires determined as continued. |
