实时水边线船载摄影测量系统研究与开发  

Research and development of real-time waterline shipborne photogrammetry system

作　　者：严丽英 杨彪[1] 蒋建平 YAN Liying;YANG Biao;JIANG Jianping(School of Earth Science and Engineering,HeHai University,Nanjing 211100,China;Lower Changjiang River Bureau of Hydrological and Water Resources Survey,Hydrology Bureau of Changjiang Water Resources Commission,Nanjing 210011,China)

机构地区：[1]河海大学地球科学与工程学院,江苏南京211100 [2]长江水利委员会水文局长江下游水文水资源勘测局,江苏南京210011

出　　处：《海洋测绘》2023年第3期54-58,共5页Hydrographic Surveying and Charting

基　　金：安徽省教育厅无人机开发及数据应用重点实验室开放基金(WRJ19005)。

摘　　要：针对水边线测绘现有方法存在的高作业风险、高成本等问题,提出一种基于船载摄影的实时水边线测绘新方法。通过数码相机、船用GNSS罗经与IMU集成,研究传感器标定、设备组网、自动化数据采集、数据融合等方法,构建多约束条件的自由网光束法空中三角测量模型,完成实时水边线测绘系统的研发。应用结果表明,100m拍摄距离下,系统绝对定位最大误差为0.258m,中误差为0.128m,精度可满足1:1000及以下比例尺水边线测绘的要求;本系统可切实有效地解决实时水边线测绘现有技术的不足,具有低成本、高精度、高效率、持久续航、一体化等显著优势。Aiming at the problems of high operation risk and high cost in the existing methods,a novel shipborne photogrammetry method for real-time waterline surveying is proposed.By integrating ordinary digital cameras,marine GNSS gyrocompass and IMU,studying the methods of sensor calibration,equipment networking,automatic data acquisition and data fusion,as well as building the constrained free network bundle aerotriangulation model,a real-time waterline surveying system is developed.The application results show that under the shooting distance of 100m,the maximum absolute positioning error of the system is 0.258 m,the root mean square error is 0.128 m,and the accuracy can meet the requirements of waterline mapping at the scale of 1:1000 and below;The system can effectively overcome the defects of other existing technology,and has significant advantages of low cost,high precision and efficiency,long endurance,integration.

关 键 词：船载摄影测量 水边线测绘 全球导航卫星系统 惯性测量单元 传感器标定 自由网平差 光束法 

分 类 号：P23[天文地球—摄影测量与遥感]