三维激光扫描技术在地形测绘中的应用

三维激光扫描技术突破了传统的逐点单独测量，实现了面域扫描数据采集。通过高速激光扫描测量，可快速获取被测对象表面的三维坐标数据，具有采集速度快、获取数据丰富等特点，且测量距离长、数据准确，不受大地水准面的精度制约。本文将三维激光扫描技术结合RTK技术，在测定扫描仪定位点和后视标靶定向点后，获得全景范围内连续的三维坐标，然后在视野范围外再设站扫描，使整个测区无漏洞，最终实现了地图生产。

Application of 3D Laser Scanning Technology in Topographic Mapping

Three-dimensional laser scanning technology breaks through the traditional point-by-point measurement and achieves surface scanning data acquisition. Using high-speed laser scanning measurement, the three-dimensional coordinate data of the measured object surface can be obtained quickly, which has the characteristics of fast acquisition speed and abundant data acquisition. Moreover, the measurement distance is long and the data is accurate, and it is not restricted by the accuracy of geoid. In this paper, three-dimensional laser scanning technology combined with RTK technology is introduced. After measuring the locating point of scanner and the orientation point of rear-view target, the continuous three-dimensional coordinates in the panoramic range are obtained. Station scanning is set outside the field of vision to make the whole survey area free of loopholes and finally realize topographic map production.