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	A high-accuracy method for filling voids and its verification
	Yue T. X. ; Chen C. F. ; Li B. L.
	2012
关键词	shuttle radar topography digital elevation models interpolation methods srtm mission height validation altimetry density
英文摘要	A new method for filling voids is developed by improving the approach to high-accuracy surface modelling (HASM), which is based on the first fundamental coefficients and the second fundamental coefficients of surfaces. The first fundamental coefficients are used to calculate the lengths of curves, angles of tangent vectors, areas of regions and geodesics on the surface. The second fundamental coefficients reflect the local warping of the surface, namely its deviation from the tangent plane at the point under consideration, which can be observed from outside the Earth. Nine regions with different landform complexities in hilly, plateau and mountainous areas are selected for testing the performance of HASM by comparing those ones of the classic methods such as triangulated irregular network (TIN), inverse distance weighted interpolation (IDW), advanced Spline method (ANUDEM), Spline and Kriging. The results demonstrated that the HASM void filling always has the highest accuracy regardless of the landform complexity, void area and auxiliary data.
出处	International Journal of Remote Sensing
卷	33
期	9
页	2815-2830
收录类别	SCI
ISSN号	0143-1161
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/26704]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Yue T. X.,Chen C. F.,Li B. L.. A high-accuracy method for filling voids and its verification. 2012.

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