| 摘要 |
Device for determining a desired contour of a ground surface, relative to th e actual contour of that ground surface, at least comprising measuring means f or generating along a determined distance from a ground surface actual values f or the height and position of a number of points of that ground surface relativ e to a determined reference point, wherein the measuring means comprise: a las er light source (17) which is adapted to generate a laser beam (18) moving over said determined distance from the ground surface; sensor means for detecting the reflected laser beam; time-measuring means for determining the transit time of said laser beam and, processing means for generating from signals fr om the laser light source (17) the sensor means and the time-measuring means of actual values for the height and the position of a number of points of this ground surface relative to the measuring point.
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