Construction Method of City DEM with Boundary Conditions
LIN Chunhua
WAN Dongping
SHAO Weizhen
Abstract：The terrain elevation points in the objective world are not continuous,but in a certain range it has the law,so an analysis of the terrain block based on the idea is proposed.The city area according to the terrain as boundary conditions is divided in-to block type of several typical,respectively is the road,water,buildings.In view of the different type,construction techniques are used to study the DEM.This paper creates elevation encryption model on the road elevation point encryption.By contrasting experi-ment,results show that our network requires that the model generates encryption elevation point meet,and it is helpful to the city of DEM to improve the accuracy,and the model is also suitable for water,for buildings.A set of convenient construction of DEM meth-od is put forward in this paper.To establish a good city DEM and further analysis of hydrological to solve the flooding problem in the city,some suggestions and methods are provided.
Keywords：digital terrain mapDEMelevation point encryptioncut off linehydrological analysis
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 936-940 )