格网DEM地形模拟的形态保真度研究

基金项目: 国家863计划资助项目(2006AA12Z212)；江苏省普通高校研究生科研创新计划资助项目(CX07B_040z)

详细信息

Morphologic Fidelity of Grid Digital Elevation Model

¹Key Laboratory of Virtual Geographic Environment,Ministry of Education,Nanjing Normal University,1 Wenyuan Road,Nanjing 210046,China;²Land Information Engineering Department,Chuzhou University,80 South Fengle Road,Chuzhou 239000,China

Funds: 国家863计划资助项目(2006AA12Z212)；江苏省普通高校研究生科研创新计划资助项目(CX07B_040z)

摘要: 分析了现有格网DEM地形模拟的失真现象,研究DEM地形模拟失真的根源。提出了DEM地形形态保真度的概念,探讨了建设高保真DEM必须解决的问题。
- DEM /
- 质量 /
- 保真度 /
- 形态精度 /
- GIS
Abstract: Many factors cause incorrect terrain modeling.The vital reason is the ambiguity of DEM quality concept.It causes the faulty for DEM accuracy assessment and the imprecise altitude interpolate model.Hence,perfecting fundamental theory of digital tertian modeling,improving on DEM processing technology and optimization of DEM data structure are key problems of high fidelity DEM establishment.An important basis is provided for high fidelity DEM establishment.
- DEM /
- quality /
- fidelity /
- morphology accuracy /
- GIS