Results 31 to 40 of about 10,896 (219)

HYBRID GEOMETRIC CALIBRATION METHOD FOR MULTI-PLATFORM SPACEBORNE SAR IMAGE WITH SPARSE GCPS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
Geometric calibration is able to provide high-accuracy geometric coordinates of spaceborne SAR image through accurate geometric parameters in the Range-Doppler model by ground control points (GCPs).
G. Lv   +5 more
doaj   +1 more source

THE GEOMETRIC ACCURACY VALIDATION OF THE ZY-3 MAPPING SATELLITE [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
ZiYuan-3 (ZY-3) mapping satellite is the first civilian high-resolution stereo mapping satellite of China. The satellite’s objective is oriented towards plotting 1:50,000 and 1:25,000 topographic maps.
X. Gao, X. Tang, G. Zhang, X. Zhu
doaj   +1 more source

COMPARISON AND ANALYSIS OF ACCURACY OF ELEVATION EXTRACTION BASED ON THE ZY-3 01 AND 02 SATELLITES STEREOSCOPIC IMAGES [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
The ZY-3 is the civil high-resolution optical stereoscopic mapping satellite independently developed by China. The ZY-3 constellation of the twin satellites operates in a sun-synchronous, near-polar, circular 505 km orbit, with a descending ...
L. Zhao, X. Fu, X. Dou, H. Liu, Z. Fang
doaj   +1 more source

Spatio-Temporal Super-Resolution Reconstruction of Remote-Sensing Images Based on Adaptive Multi-Scale Detail Enhancement

open access: yesSensors, 2018
There are many problems in existing reconstruction-based super-resolution algorithms, such as the lack of texture-feature representation and of high-frequency details. Multi-scale detail enhancement can produce more texture information and high-frequency
Hong Zhu   +5 more
doaj   +1 more source

COUPLING ANALYSIS OF HEAT ISLAND EFFECTS, VEGETATION COVERAGE AND URBAN FLOOD IN WUHAN [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
In this paper, satellite image, remote sensing technique and geographic information system technique are main technical bases. Spectral and other factors comprehensive analysis and visual interpretation are main methods.
Y. Liu, Q. Liu, W. Fan, G. Wang
doaj   +1 more source

Monotone extensions of mappings and their applications [PDF]

open access: yesPacific Journal of Mathematics, 1983
This paper deals with one of the following general problems. Let P denote a property of mappings which is not necessarily hereditary with respect to the restrictions of mappings. In particular, P may be the property of being a closed mapping, or an open mapping, or a monotone mapping, or a compact mapping, or a quotient mapping, or a perfect mapping ...
openaire   +3 more sources

Maps of matroids with applications

open access: yesDiscrete Mathematics, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

The Generalized Gauss Map and Applications

open access: yesRocky Mountain Journal of Mathematics, 1993
The authors define a Gauss map for hypersurfaces in a Riemannian parallelizable manifold and study its properties. Applying these results they generalize some classical results of Differential Geometry.
Ripoll, Jaime B., Sebastiani, Marcos
openaire   +2 more sources

JOINT CALIBRATION OF 3D LASER SCANNER AND DIGITAL CAMERA BASED ON DLT ALGORITHM [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
Design a calibration target that can be scanned by 3D laser scanner while shot by digital camera, achieving point cloud and photos of a same target. A method to joint calibrate 3D laser scanner and digital camera based on Direct Linear Transformation ...
X. Gao, M. Li, L. Xing, Y. Liu
doaj   +1 more source

REFINED SIMULATION OF SATELLITE LASER ALTIMETER FULL ECHO WAVEFORM [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
The return waveform of satellite laser altimeter plays vital role in the satellite parameters designation, data processing and application. In this paper, a method of refined full waveform simulation is proposed based on the reflectivity of the ground ...
H. Men   +8 more
doaj   +1 more source

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