江苏省沿海滩涂机载激光雷达系统检校研究

Study on Calibration of Airborne Lidar System in Coastal Beach in Jiangsu Province

机载激光雷达系统凭借其主动式遥感方式、无控制点测量等优势,广泛应用于困难区域航摄数据获取中。江苏省沿海滩涂是我国淤泥质潮滩最为集中的地区之一,滩涂面积位居沿海各省区之首,属于航摄测绘困难地区,适宜开展机载激光雷达航空摄影。以江苏省"十二五"省级基础测绘沿海滩涂航摄项目为例,介绍了激光雷达系统检校的内容和方法,通过检校场选取、控制点布设、检校航线设计、距离检校和安置角检校的原理和方法,消除了激光设备和数码相机在安装时产生的误差,并利用控制点对检校的精度进行了检查,取得了较好的检校效果。本项目的经验可为类似项目开展提供可行的参考依据。

Airborne lidar system has been widely used in aerial photography data acquisition in difficult areas due to its advantages of active remote sensing and no control point measurement.Jiangsu coastal beach is one of the most concentrated areas of silt tidal flat in China.The beach area is the first in the coastal provinces,which belongs to the area of aerial survey and mapping,and is suitable for airborne laser radar aerial photography.Takes Jiangsu coastal aerial project as an example,the content and method of laser radar calibration system is introduced,the error occurred in installation of laser equipment and digital camera is eliminated by the method of calibration area selection,control points layout,calibration course design,range and angle offset.Used with control points to check the calibration precision has gotten a good effect.The experience of this project provides a feasible reference for the development of similar projects.