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：The accuracy of DTMs interpolated based on laser scanning data depends mainly on the accuracy of original data,filtering and interpolation method. There are many factors that influence the accuracy of original data,namely the stability of photogrammetric flight,quality of navigation data, accuracy of calibration,size of the footprint on the ground (flight height and beam convergence), landscape and land cover. It is difficult to separate the influence of each factor,therefore the total impact of all factors on the final product should be taken into consideration. In this work,the evaluation of height accuracy of data acquired by prototypical scanner ScaLARS was presented. Laser scanning was performed for 20-kilometer section of Widawa river valley. Registration of INS and GPS signals was carried out using Applanix POS/AV 510 system. Scanning was performed from airplane AN-2 at flight height 550 m. Terrain size of footprint was about 0.6 m. The study of scanning data accuracy was executed based on points obtained from direct terrain measurements using GPS and tachometry techniques. From the 20-kilometer section,four representative areas were selected. In those areas,there were ten testing fields of miscellaneous land cover. The height accuracy results obtained were as follows: a) forestry terrains – areas of considerable height differences – 0.40 m,b) terrain along river bed with high grass and bush – 0.40 m,c) agricultural terrain (arable fields, meadows,pastures) – mainly flat terrain – 0.25 m,d) tarmac,cobblestone and gravel roads – 0.20 m.
其他摘要：Dokładność NMT interpolowanych na podstawie danych skanowania laserowego zależy w głównej mierze od dokładności danych źródłowych,jak również od zastosowanej metody filtracji tych danych i metody interpolacji. Na dokładność źródłowych danych lotniczego sk
