| 摘要 |
FIELD: data processing; measurement technology.SUBSTANCE: invention relates to geodetic monitoring and can be used to determine and recovery of the position of the horizontal axis of any complex engineering linear object. Disclosed method of determining and recovery of the position of the horizontal axis of linear engineering object using anchors preventive altitude is a geodetic measurements, as a result of which the said horizontal axis and each time, After its loss, recovered from the same reference points. In this method on one of the reference points preventive tall answers are ground laser scanner (hereinafter - GBLS), creating additional local network preventive tall ground, in which the reference points are solid elements of linear structures of engineering object, scanning of all structures of linear engineering object by GBLS with linear discretisation of scanning pitch within 2 to 10 mm and mean-square error of 2 mm, as a result, the coordinates X, Y, Z reflection points of the laser beam from the surface of all structures of linear engineering object, scanning results are transmitted (scan) in a computer, using a computer program is recorded in the scan and a digital dot metric three-dimensional (3D) model of the surface of all structures of linear engineering object. Then, data processing results of laser scanning, filtering parameters are determined for removal of a cloud of points of laser reflections not meant for measurement of foreign objects, they are filtered, is linked to the specified scan system of coordinates. In the same program of the virtually modelled said horizontal axis, automatically approximating the vector object horizontal axis in data GBLS and finding the point of its contact with the obtained data GBLS, determining three-dimensional coordinates X, Y, Z produced virtual horizontal axis of linear engineering facility.EFFECT: high accuracy of determining and recovery of the position of the horizontal axis of linear engineering object using ground-based laser scanner.1 cl, 3 dwg |
