Calibration of vehicle-borne laser mapping system
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摘要: 介绍了车载激光测绘系统的组成和工作原理。对系统中的激光扫描仪增设了可见光源作为标校参考光,以便有效地确定激光测量中心和扫描方向,并直接测量部分标校参数。根据其特点,设计了基于可见参考光的标校方案。进行了静态标校试验和激光测绘系统动态精度测量试验,试验得到标定误差为0.028 1 m,系统平面定位误差为0.288 m。通过系统精度试验分析,进一步验证了标定方案的正确性和有效性。Abstract: The composition and principle of a vehicle-borne laser mapping system are described in this paper. A visible light source is designed for a laser scanner in the vehicle-borne laser mapping system, by which the laser measuring center and scanning direction can be determined effectively and a parts of calibration parameters are able to be measured directly. A calibration scheme based on the visible light source is designed, then static calibration experiment and dynamic measurement are performed. Obtained results show that the calibrating error is 0.028 1 m and plane positioning error is 0.288 m. The experiment results and analysis prove the correctness and validity of calibration project.
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Key words:
- laser mapping system /
- vehicle-borne system /
- laser scanner /
- calibration
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