摘要
针对无人机遥感及船载LiDAR技术在河道陡岸地形测量中存在的作业风险大、成本高等问题,提出了一种消费级数码相机与GNSS集成的船载摄影测量方法。该方法通过传感器与PC机组网、Socket编程,实现持久续航能力的全自动数据采集;通过研究自检校光束法与传感器标定模型,实现数码影像与GNSS数据融合,解决了移动摄影测量对控制点或高精度惯导的依赖问题;通过研究船载影像数据处理中的自由度消除方法,实现了河道陡岸实景三维重建。在长江典型河段的实例验证结果表明:该方法精度可靠,数据采集高效,数据处理自动化程度高,可实现水陆一体化测绘,并具有低成本、易操作等显著优势。
Aiming at the problems of high operation risk and high cost of UAV remote sensing and ship-borne LiDAR technology in river steep bank topographic survey,a ship-borne photogrammetry method integrating consumer digital camera and GNSS was proposed.This method can realize automatic data acquisition with lasting endurance by networking sensors and PCs.By studying the self-calibration beam method and sensor calibration model,the fusion of digital image and GNSS data was realized,solving the dependence of mobile photogrammetry on control points or high-precision inertial navigation.By studying the degree of freedom elimination method in ship-borne image data processing,the 3D scene reconstruction of river steep bank was realized.The measurement results in the typical reaches of the Yangtze River showed that this method was reliable in accuracy,efficient in data acquisition,and highly automated in data processing.It can realize the integrated mapping of land and water,and has significant advantages such as low cost and easy operation.
作者
李树明
严丽英
蒋建平
杨彪
LI Shuming;YAN Liying;JIANG Jianping;YANG Biao(Lower Changjiang River Bureau of Hydrological and Water Resources Survey,Hydrology Bureau of Changjiang Water Resources Commission,Nanjing 210011,China;Nanjing Juntu Technology Co.,Ltd.,Nanjing 211100,China)
出处
《人民长江》
北大核心
2023年第6期120-125,共6页
Yangtze River
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项目(WRJ19005)。
关键词
船载摄影测量
数码相机
GNSS
河道测量
移动测量
ship-borne photogrammetry
digital camera
GNSS
river bank topographic photogrammetry
mobile photogrammetry
