摘要
数字孪生流域覆盖的地理范围大,为避免因数据量大导致的运行速度慢、孪生体验差等问题,通常选择大范围低精度、小范围高精度的地形数据来精准表达流域地形。但由于地形数据精度不同,在不同精度地形数据接边处会出现地形突变、不能客观真实表达地形,为实现不同精度地形数据融合时接边处的平滑过渡,文章提出了一种对接边处高精度地形数据进行逐级处理的方法,实践表明,该方法简单可行、且不会降低原有地形精度,有效解决了数字孪生流域建设过程中存在的地形突变、地形冲突等问题,为水利业务“四预”功能实现提供了较为逼真的数字化场景支撑。
The digital twin river basin covers a wide geographical region.As a result,the size of geographical data will be very big,which can cause slow running speed and poor user experience in the digital twin river basin project.To avoid these problmes,large areas of low precision and small areas of high precision topographic data are usually chosen to accurately show the topography of river basin.However,in order to achieve smooth transition at the edge of terrain data with different precision,the terraion data of different resolution could have abrupt change in location of terrain data connection which was unable to show real terrain in river basins.This study developed a method of high-resolution data step by step to smooth the terrain in the location of data connection.The result shows that the method had simple,reliable,and high terrain resolution characteristics and was perfect to solution the abrupt change and conflict of terrain in the digital twin river basin.This study also provides a realistic digital scene support to realize the“Four Predictions”for water conservancy business.
作者
胡洁
乔贤贤
程冀
HU Jie;QIAO Xianxian;CHENG Ji(Yellow River Engineering Consulting CO.,LTD,Zhengzhou 450003,China)
出处
《河南水利与南水北调》
2023年第3期109-111,共3页
Henan Water Resources & South-to-North Water Diversion
关键词
地形融合
数字孪生
地形突变
数字化场景
fusion of terrain data
digital twin
abrupt change of terrain
digital scene
