期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2000
卷号：XXXIII Part B4 (/1-3)
页码：356-359
出版社：Copernicus Publications
摘要：The adequate base to height (B/H) ratio is practically investigated with aerial photos and digital photogrammetric instruments. Very high overlap aerial photos are triangulated all at once for reducing measurement error and DEMs are created from pairs of photos at different B/H ratio. 11 pairs were selected and B/H ratio ranges from 0.1 to 1.35. Then, accuracy of each DEM is examined b y ground points. Real time kinematic (RTK) GPS method, which can obtain precise position quickly, is used for acquiring ground point positions. Result is that DEM accuracy increases rapidly in proportion to the B/H ratio at lower value whereas its accuracy gradually decreased at the higher B/H ratio. In conclusion, the B/H ratio between 0.5 and 1.0 is reasonable for DEM creation
关键词：Optical Sensor; Remote Sensing; Digital Photogrammetry; Topographic Map
