基于数字航空摄影测量的水域地形图绘制方法  

Method of Drawing Water Area Topographic Map Based on Digital Aerial Photogrammetry

作　　者：姚倩 YAO Qian(Lianyungang Water Conservancy Planning and Design Institute Co.,LTD.,Lianyungang 222000,Jiangsu,China)

机构地区：[1]连云港市水利规划设计院有限公司,江苏连云港222000

出　　处：《科技和产业》2025年第5期25-28,共4页Science Technology and Industry

摘　　要：常规的地形图绘制方法多数采用倾斜摄影实景三维模型原理,更加适用于陆地地域测量与绘制,但在水域地形图绘制中应用效果不佳,地形图平面中误差较大,绘制精度较低。基于此,引入数字航空摄影测量原理,提出一种新的绘制方法。首先,设计数字航空摄影参数,包括地面采样间隔(GSD)、航高与影像重叠度。然后,布设像控点,利用全球导航卫星系统实时动态差分(GNSS-RTK)技术测量像控点坐标。在此基础上,利用数字航空摄影测量技术,分别获取地形图平面要素与高程要素,进而绘制地形图。实验结果可知,新方法可行性较高,其平面中误差较小,最大不超过0.091 m,地形图绘制精度较高。Most of the conventional topographic map drawing methods adopt the principle of tilt photography real scene 3D model,which is more suitable for land area survey and drawing.The application effect in the water area topographic map drawing is poor,the plane error of the topographic map is large,and the drawing accuracy is low.Based on this,a new rendering method was proposed by introducing the principle of digital aerial photogrammetry.Firstly,digital aerial photography parameters was designed,including ground sampling distance(GSD),altitude,and image overlap.Then,image control points was set up and global navigation satellite system real time kinematic(GNSS-RTK)technology was used to measure the coordinates of the image control points.On this basis,the digital aerial photogrammetry technology was used to obtain the plane and elevation elements of the topographic map respectively,and then the topographic map was drawn.The experimental results show that the new method is highly feasible,its plane mean square error is small,the maximum is not more than 0.091 m,and the accuracy of topographic map drawing is high.

关 键 词：数字航空摄影测量 方法 水域 地形图 绘制 

分 类 号：P231[天文地球—摄影测量与遥感] TV221[天文地球—测绘科学与技术]