全野外精密数字地面模型的建立

摘要

数字地面模型DTM是国家空间数据基础设施的框架数据之一,现在已在各个领域得到了广泛的应用。本文着重对全野外精密地面数字模型在实际建立的作业方式、精度要求、检查方法、精度评定技术进行了深入的探讨,并简要介绍了精密地面数字模型的应用前景。%DEM has been widely used in every field as one of National Spatial Data Infrastructure frame data.The article attempts to probe into the operation methods,precision requirements,inspection methods and precision assessment technique during the construction of total field precise digital terrain model.Meanwhile,it briefly introduces the application of the digital terrain model.