Degree of Areal Drainage Assessment Using Digital Elevation Models
نویسندگان
چکیده
منابع مشابه
Quality assessment digital elevation models
A number of published stereo matching algorithms have been implemented and tested on SPOT images of areas for which we have gridded digital elevation models (DEMs) available with spacings of 80m or less as well as ground control checkpoints. Results will be presented for a comparison of stereo matched output with the DEMs and an analysis of the errors arising and their causes. Results will be d...
متن کاملAssessment of digital elevation models using RTK GPS
A Digital Elevation Model (DEM) represents the height of a patch of terrain. Accuracies of DEMs vary depending upon the requirements of different applications. DEMs have been applied to a wide range of civil engineering and military planning tasks. Besides the conventional methods of creating DEMs, such as photogrammetry and manual field survey, airborne laser scanning and radar interferometry ...
متن کاملCarving and adaptive drainage enforcement of grid digital elevation models
[1] An effective and widely used method for removing spurious pits in digital elevation models consists of filling them until they overflow. However, this method sometimes creates large flat regions which in turn pose a problem for the determination of accurate flow directions. In this study, we propose to suppress each pit by creating a descending path from it to the nearest point having a low...
متن کاملAssessment of Digital Elevation Models Derived Using Radar Interferometry
Interferometric synthetic aperture radar (InSAR) has been developed as a powerful technique to derive high quality digital elevation models (DEMs) from a pair of SAR images. (Honikel, 1998) This paper describes InSAR processing principle, the crucial steps in deriving high quality DEMs from the C-band ERS Tandem Mission data, and addresses possible error sources before and during the processing...
متن کاملassessment of the efficiency of s.p.g.c refineries using network dea
data envelopment analysis (dea) is a powerful tool for measuring relative efficiency of organizational units referred to as decision making units (dmus). in most cases dmus have network structures with internal linking activities. traditional dea models, however, consider dmus as black boxes with no regard to their linking activities and therefore do not provide decision makers with the reasons...
ذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IOP Conference Series: Earth and Environmental Science
سال: 2014
ISSN: 1755-1307,1755-1315
DOI: 10.1088/1755-1315/21/1/012018