基于Google Earth三维信息构建纳帕海湿地数字高程模型

Construction of Digital Elevation Model of Napahai Wetland Based on the Google Earth Elevation Data

基于开放的二次开发平台Google Earth API,通过IApplicationGE接口提取地面三维信息,对纳帕海流域进行DEM构建,并在流域整体与纳帕海湿地区对GE生成DEM和本区域原有1∶5万DEM进行数据精度比较,发现GE生成的DEM在纳帕海湿地区精度更高,能够更好地模拟研究区地形。

Based on the open development platform of Google Earth API, the IApplicationGE interface is used to take the 3D information of the land surface. The DEM is then set up for the catchment of Lake Napa. The data comparison with the original 1 ： 50000 DEM shows that GE - DEM is of higher accuracy, and does better in the topographic simulation.