| 摘要 |
This invention concerns digital terrain mapping, and in particular a meth od for producing digital terrain maps of the vicinity around large rotating machinery, such as draglines, shovels, excavators, wheel loaders or cranes. The method involves the following steps: Mounting a 2-Dimensions laser scann er and a high-accuracy RTK GPS system to an item of large rotating machinery , at a radial extremity of the machinery. Arranging the laser scanner to rec ord radial lines of data representing the terrain below the extremity of the machinery. Rotating the machinery completely about its axis of rotation and generating data from both the laser scanner and GPS system that represents the terrain around the machinery. Wherein, a calibration is conducted by rec ording data from markers at known locations in the terrain below the extremi ty of the machinery to determine the relative positions of the laser scanner centre and the GPS antenna, the orientation of the laser scanner and the ti me lag between the data generated from both the laser scanner and the GPS sy stem. In a further aspect the invention concerns equipment for use in the me thod and software.
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