Results 11 to 20 of about 12,844,096 (292)
Intake Ground Vortex Aerodynamics [PDF]
, 2008 When an aircraft is operating in static or near static conditions during taxiing or take-o a vortex can form between the ground and the intake. With engine diameters increasing, intakes are moving non-dimensionally closer to the ground and as a ...
Murphy, John
core +7 more sources
PRECISION OF VISUAL LOCALIZATION USING DYNAMIC GROUND CONTROL POINTS [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020 Localization is one of the first steps in navigation. Especially due to the rapid development in automated driving, a precise and reliable localization becomes essential.
P. Trusheim, C. Heipke
doaj +1 more source
Data, 2021 A new ground truth dataset generated with high-accuracy Global Navigation Satellite Systems (GNSS) positional data of the invasive reed Phragmites australis subsp. australis within Îles-de-Boucherville National Park (Quebec, Canada) is described.
Kathryn Elmer, Margaret Kalacska
doaj +1 more source
Examining the impact of Ground Control point quantity on the geometric accuracy of UAV photogrammetric products formed using Structure-from-Motion approach [PDF]
Tehnika, 2023 The positional and vertical accuracy of UAV aerial photogrammetry products generated using the Structure from Motion (SfM) approach depends on various factors, such as flight plan parameters, camera quality, camera calibration, the SfM algorithm used ...
Nikolić Ratko R. +2 more
doaj +1 more source
Set-point Control for a Ground-based Reconfigurable Robot
2022 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), 2022 Reconfigurable mobile robots are well suited for inspection tasks in legacy nuclear facilities where access is restricted and the environment is often cluttered. A reconfigurable snake robot, MIRRAX, has previously been developed to investigate such facilities.
Wei Cheah +3 more
openaire +4 more sources
Influence of the shape and size of the ground targets on the accuracy of photogrammetric processing
RUDN Journal of Ecology and Life Safety, 2020 The materials obtained from the unmanned aerial vehicle (UAV) are used to solve many problems, including large-scale mapping and monitoring of linear objects, as well as the ecological situation and monitoring of emergency situations.
Amr Elsheshtawy +3 more
doaj +1 more source
MULTI-GNSS PPP: An Alternative Positioning Technique for Establishing Ground Control Points
International Journal of Environment and Geoinformatics, 2020 Traditionally, ground control points (GCPs) are utilized to determine absolute image orientations indirectly in aerial triangulation. For a long time, differential and relative GNSS (Global Navigation Satellite System) positioning techniques have been ...
Berkay Bahadur, Metin Nohutçu
doaj +1 more source
, 2023 Recent publications have described the ability of citizen scientists to conduct unoccupied aerial system (UAS) flights to collect data for coastal management.
Lucas F. Rabins (14819161) +2 more
core +1 more source
Factors Influencing the Accuracy of Shallow Snow Depth Measured Using UAV-Based Photogrammetry
Remote Sensing, 2021 Factors influencing the accuracy of UAV-photogrammetry-based snow depth distribution maps were investigated. First, UAV-based surveys were performed on the 0.04 km2 snow-covered study site in South Korea for 37 times over the period of 13 days under 16 ...
Sangku Lee +3 more
doaj +1 more source
, 2023 Recent publications have described the ability of citizen scientists to conduct unoccupied aerial system (UAS) flights to collect data for coastal management.
Lucas F. Rabins (14819161) +2 more
core +1 more source