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《Science of Surveying and Mapping》 2007-06
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Robust interpolation and analyses for DEM

ZHANG Ju-qing①,CHEN Zai-hui①,Wei Jian-zhong②(①School of Geological Engineering and Surveying Engineering,chang'an University,Xi'an 710054,China;②Land resources planning of Sanming city,longquan building in Meilie district,Sanming 365000,China)  
Weighted average method is often applied in grid generating.But when the data is contaminated by abnormal errors,the result by weighted average will be distorted seriously.The method of DEM grid generating based on robust principal can resist effectively the influence of outliers.In this paper,the method of robust interpolation is discussed.An example is given with weighted average method,which shows that the effectiveness of the new method.
【Fund】: 长安大学基金(0305-1001);; 地球空间环境与大地测量教育部重点实验室开放研究(1469990324233—04—02);; 自然基金(40672173)
【CateGory Index】: P207;P208
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