测绘通报 ›› 2020, Vol. 0 ›› Issue (2): 126-130.doi: 10.13474/j.cnki.11-2246.2020.0058

• 技术交流 • 上一篇    下一篇

船载移动激光三维测量系统安置角偏差检校

沈蔚1,2, 帅晨甫1,2, 惠笑1,2, 栾奎峰1,2, 张华臣1,2, 马建国1,2   

  1. 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
  • 收稿日期:2019-05-14 出版日期:2020-02-25 发布日期:2020-03-04
  • 通讯作者: 惠笑。E-mail:tmachx@163.com E-mail:tmachx@163.com
  • 作者简介:沈蔚(1977-),男,博士,教授,研究方向为海洋测绘与遥感。E-mail:wshen@shou.edu.cn
  • 基金资助:
    上海市科委重点研发项目(17DZ1204902)

Calibration of placement angle deviation for shipborne mobile LiDAR 3D surveying system

SHEN Wei1,2, SHUAI Chenfu1,2, HUI Xiao1,2, LUAN Kuifeng1,2, ZHANG Huachen1,2, MA Jianguo1,2   

  1. 1. College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China;
    2. Shanghai Engineering Research Center of Estuarine and Oceanographic Mapping, Shanghai 201306, China
  • Received:2019-05-14 Online:2020-02-25 Published:2020-03-04

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。

关键词: 安置角偏差, 检校, 时空同步, 船载移动激光, 测量系统

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.

Key words: placement angle deviation, calibration, space-time synchronization, shipborne mobile LiDAR, surveying system

中图分类号: