Results 61 to 70 of about 15,207,260 (163)

A Management System to Develop Occupational Health & Safety in Ground Control Operations of Underground Mines [PDF]

, 2012
Falls of ground have historically been the main cause for fatalities in underground mines. Although recent advances in technology have reduced the number of such accidents, when failures occur they usually result in severe consequences.
Goodarzi, Arash, Oraee-Mirzamani, Nikzad, Oraee, Kazem   +2 more
core  

Ground-penetrating radar (GPR) point measurements of ice thickness on Hornkees in 1999

, 2015
Ground-penetrating radar (GPR) point measurements of ice thickness on Nillkees in ...
Kuhn, Michael, Michael Kuhn (6957845), Norbert Span (6977198), Stocker-Waldhuber, Martin, Massimo, Marius, Fischer, Andrea, Seiser, Bernd, Marius Massimo (8013077), Martin Stocker-Waldhuber (6957839), Span, Norbert, Michael Butschek (8013080), Butschek, Michael, Andrea Fischer (6957836), Bernd Seiser (6957848), Helfricht, Kay, Kay Helfricht (7884212)   +15 more
core   +1 more source

Influence of Wiring Connection Mode on Grounding Potential Ｒise in Voltage Transient Circuits

Journal of Harbin University of Science and Technology, 2021
Ground potential fluctuation caused interferences or even irreversible damage to the control and measurement circuit in the voltage transient system.
ZHAO Miao
doaj   +1 more source

Target Influence on Ground Control Points (GCPs) Identification in Aerial Images

IGARSS 2020 - 2020 IEEE International Geoscience and Remote Sensing Symposium, 2020
Unmanned aerial vehicles (UAVs) are used nowadays as a standard tool to derive very high-resolution geospatial data. However, UAV payload limitation imposes the use of not such reliable hardware affecting the georeferencing precision. In the literature it is possible to find numerous studies investigating the parameters influencing UAV-based products ...
Jonás Hruska, Luís Pádua, Telmo Adão, Emanuel Peres, José Martinho Lourenço, Joaquim João Sousa   +5 more
openaire   +2 more sources

The DEM Registration Method Without Ground Control Points for Landslide Deformation Monitoring

Remote Sensing
Landslides are geological disasters that are harmful to both humans and society. Digital elevation model (DEM) time series data are usually used to monitor dynamic changes or surface damage.
Yunchuan Wang, Jia Li, Ping Duan, Rui Wang, Xinrui Yu   +4 more
doaj   +1 more source

The Importance of Ground Control Points In A Photogrammetric Workflow

Journal of Applied Engineering Sciences
Abstract This study investigates the optimal distribution and pattern of ground control points (GCPs) in aerial photogrammetric projects. Aerial triangulation (AT), also known as bundle adjustment, is the fundamental step in refining 3D reconstruction models and camera positions, thereby minimizing reprojection errors.
Iuliana Maria Pârvu, Iuliana Adriana Cuibac Picu, Ileana Spiroiu   +2 more
openaire   +1 more source

Autonomous Mobile Ground Control Point Improves Accuracy of Agricultural Remote Sensing through Collaboration with UAV

Inventions, 2020
Ground control points (GCPs) are critical for agricultural remote sensing that require georeferencing and calibration of images collected from an unmanned aerial vehicles (UAV) at different times.
Xiongzhe Han, J. Alex Thomasson, Tianyi Wang, Vaishali Swaminathan   +3 more
doaj   +1 more source

Robust ground control point localization from multi-aspect stereo SAR observations using Chinese commercial satellite SVN-2

International Journal of Digital Earth
With the rapid deployment of Chinese commercial synthetic aperture radar (SAR) satellites, stereo SAR technology offers new opportunities for precise ground control point (GCP) localization.
Minzheng Mu, Zhiwei Li, Heng Zhang, Xin He, Yan Zhu, Yifan Zhang, Chenglong Cao, Xun Du, Kun Han   +8 more
doaj   +1 more source

Comparison of Direct and Indirect Georeferencing Methods Using Satellite Linear Array Iimages [PDF]

فصلنامه علوم و فناوری فضایی, 2015
Comparison of direct and indirect methods for georeferencing of satellite linear array stereo images is proposed in this paper. In direct method, collinear condition and orbital elements are used for geolocation of pixels and ground control points (GCPs)
Ahmad Izadipour, Bhzad Akbari, Ali Reza Sharifi, Meysam Yousefzade   +3 more
doaj  

Measures of both global and local-scale (fine-scale) spatial map errors from Ground Control Point (GCP) residual errors.

, 2013
Measures of both global and local-scale (fine-scale) spatial map errors from Ground Control Point (GCP) residual errors.
Daniel Bongiorno (461024), Mitch Bryson (461022), Richard J. Murphy (461023), Matthew Johnson-Roberson (294309)   +3 more
core   +1 more source