| 船载移动激光三维测量系统安置角偏差检校 |
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| 引用本文： | 沈蔚,帅晨甫,惠笑,栾奎峰,张华臣,马建国.船载移动激光三维测量系统安置角偏差检校[J].测绘通报,2020,0(2):126-130. |
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| 作者姓名： | 沈蔚 帅晨甫 惠笑 栾奎峰 张华臣 马建国 |
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| 作者单位： | 1. 上海海洋大学海洋科学学院, 上海 201306;2. 上海河口海洋测绘工程技术中心, 上海 201306 |
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| 基金项目： | 上海市科委重点研发项目（17DZ1204902） |
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| 摘 要： | 船载移动激光三维测量系统是集激光扫描仪、全球定位系统和惯性导航测量单元等于一体的多传感器集成系统，具有效率高、精度高、三维测量等特点，可解决码头、河道、海岛礁测绘中传统方法难以测量的难题。船载移动激光三维测量系统的高精度时空同步是实现数据融合和高精度三维测量的保证，安置角偏差检校是船载移动激光三维测量的关键步骤。本文首先分析了船载移动激光三维测量系统中相关坐标系之间的转换关系，提出了一种以桥体为检校场的安置角偏差消除方法。该方法在时空配准的基础上，通过扫描测线内桥体结构的偏移量分别计算侧滚角、俯仰角及航向角的安置角偏差，最后通过控制点验证误差改正后的测量精度。试验结果证明，本文方法易于实施，且具有较高的准确性，能够有效保障船载移动激光测量数据的质量和精度。
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| 关 键 词： | 安置角偏差 检校 时空同步 船载移动激光 测量系统 |
| 收稿时间： | 2019-05-14 |
Calibration of placement angle deviation for shipborne mobile LiDAR 3D surveying system |
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| SHEN Wei,SHUAI Chenfu,HUI Xiao,LUAN Kuifeng,ZHANG Huachen,MA Jianguo.Calibration of placement angle deviation for shipborne mobile LiDAR 3D surveying system[J].Bulletin of Surveying and Mapping,2020,0(2):126-130. |
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| Authors: | SHEN Wei SHUAI Chenfu HUI Xiao LUAN Kuifeng ZHANG Huachen MA Jianguo |
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| Institution: | 1. College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China;2. Shanghai Engineering Research Center of Estuarine and Oceanographic Mapping, Shanghai 201306, China |
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| Abstract: | The shipborne mobile LiDAR 3D surveying system is a multi-sensor integrated system integrating laser scanner, global positioning system and inertial navigation system. It has the characteristics of high efficiency, high precision and 3D surveying, and it can solve the problem that traditional methods are difficult in the mapping of docks, river courses and islands and reefs. The high-precision space-time synchronization of the LiDAR surveying system is the guarantee of data fusion and high-precision 3D surveying. The placement angle deviation calibration is an important step in the surveying of system. This paper first analyzes the conversion relationship in the relevant coordinate systems in the shipborne mobile LiDAR 3D surveying system, and proposes a method to eliminate deviation based on the bridge as the calibration field. Based on the high-precision space-time synchronization, the method calculates the placement angle deviation of the roll angle, the pitch angle and the heading angle respectively by the offset of the bridge in the scanning line. Finally the reference points are used to verify the surveying accuracy after calibration. The experiment verifies the accuracy of the method and it can significantly improve the quality and accuracy of shipborne mobile LiDAR surveying data. |
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| Keywords: | placement angle deviation calibration space-time synchronization shipborne mobile LiDAR surveying system |
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