期刊名称：Archiwum Fotogrametrii, Kartografii i Teledetekcji
印刷版ISSN：2083-2214
出版年度：2007
卷号：17
语种：English
出版社：Main Board of Association of Polish Surveyors
摘要：Evaluation of accuracy of ASTER DEM generation in polar regions and its applicability to orto-rectification was investigated. In the first phase of the research,ASTER DEMs of three various resolution values (30,60 and 120 m) were generated. In order to assess the influence of area type on the DEM accuracy,the research territory was divided into four test areas: water,glaciers, lands with small slope and mountainous regions. ASTER DEM accuracy was evaluated on the basis of Photo DEM made from aerial photos scaled 1:50 000. Both products were compared by generating differential images for every resolution. In the research,an assumption was made that ASTER DEM with an error below 100 m can be used for orto-rectification,as maximum height error of 95 m translates into a horizontal displacement of approximately 14 m (accuracy of about 1 pixel). In the case of waters and flat lands,there was any error larger than 100 m. Gross errors occurred within 9.5 % of mountainous areas for ASTER DEM 30m and 6 % for ASTER DEM 60m and 120m. However,the percentage of gross errors for glaciers amounted to 2.5 % for ASTER DEM 30m and just 1.5 % for ASTER DEM 120m.
其他摘要：Celem badań prezentowanych w niniejszej pracy była ocena dokładności NMT generowanego z zobrazowań satelitarnych ASTER w obszarach polarnych oraz możliwości wykorzystania go do ortorektyfikacji obrazów. W ramach badań wygenerowano NMT ASTER w trzech różny
