Results 41 to 50 of about 2,775 (199)

A flow disturbance estimation and rejection strategy for multirotors with round-trip trajectories [PDF]

, 2020
This paper presents a round-trip strategy of multirotors subject to unknown flow disturbances. During the outbound flight, the vehicle immediately utilizes the wind disturbance estimations in feedback control, as an attempt to reduce the tracking error ...
Byun, Jaeseung, Mueller, Mark W, Mäkiharju, Simo A   +2 more
core   +2 more sources

Monitoring the Breeding Territory of the Short-Toed Eagle

Пернатые хищники и их охрана, 2023
In the nesting seasons of 2013–2023, monitoring of the permanent nesting site of a pair of Short-Toed Eagles (Circaetus gallicus) was conducted in the southern shore of Lake Balkhash, in the transition landscape of wetland to desert biome, in a wooded ...
Altai Zh. Zhatkanbaev, Nurlan M. Dosov, Aleksey A. Grachev, Ermek S. Musyrpanov, Sergey S. Shmygalev   +4 more
doaj   +1 more source

Conceptual Design of a Small Hybrid Unmanned Aircraft System

Journal of Advanced Transportation, Volume 2017, Issue 1, 2017., 2017
UAS (Unmanned Aircraft System) technologies are today extremely required in various fields of interest, from military to civil (search and rescue, environmental surveillance and monitoring, and entertainment). Besides safety and legislative issues, the main obstacle to civilian applications of UAS systems is the short time of flight (endurance), which ...
Umberto Papa, Salvatore Ponte, Giuseppe Del Core, Guizhen Yu   +3 more
wiley   +1 more source

Quadrocopter Trajectory Generation and Control [PDF]

IFAC Proceedings Volumes, 2011
Abstract An algorithm is presented that allows the calculation of flight trajectories for quadrocopters. Trajectory feasibility constraints regarding the vehicle dynamics and input constraints are derived. They are then used in the planning algorithm to guarantee the feasibility of generated trajectories.
Markus Hehn, Raffaello D'Andrea
openaire   +1 more source

Sequential Classification of Palm Gestures Based on A* Algorithm and MLP Neural Network for Quadrocopter Control

Metrology and Measurement Systems, 2017
This paper presents an alternative approach to the sequential data classification, based on traditional machine learning algorithms (neural networks, principal component analysis, multivariate Gaussian anomaly detector) and finding the shortest path in a
Wodziński Marek, Krzyżanowska Aleksandra   +1 more
doaj   +1 more source

Trajectory Evaluation of Rotor‐Flying Robots Using Accurate Inverse Computation Based on Algorithm Differentiation

Mathematical Problems in Engineering, Volume 2014, Issue 1, 2014., 2014
Autonomous maneuvering flight control of rotor‐flying robots (RFR) is a challenging problem due to the highly complicated structure of its model and significant uncertainties regarding many aspects of the field. As a consequence, it is difficult in many cases to decide whether or not a flight maneuver trajectory is feasible.
Yuqing He, Yingjun Zhou, Jianda Han, Fatih Yaman   +3 more
wiley   +1 more source

Investigation of objects of forensic construction and technical expertise using drones [PDF]

E3S Web of Conferences
The article deals with the problems of using special methods of forensic construction-technical expertise. The classification of methods and means on various grounds, in particular, on the nature of the impact on objects and on the principle of operation
Butyrin Andrei Yur’evich, Stativa Ekaterina Borisovna   +1 more
doaj   +1 more source

Expedition to Alaid and Ebeko volcanoes (Kuril islands) in summer 2023

Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле, 2023
The results of field work at the active volcanoes Alaid and Ebeko, located in the northern part of the Kuril Island Arc, carried out in June−July 2023 are described.
I.E. Bolshakov, A.A. Nuzhdaev, R.A. Kuznetsov, L.P. Anikin, K.A. Kudryashova, E.S. Zhitova   +5 more
doaj   +1 more source

OPTIMIZATION OF PROCESSES OF ROBUST CONTROL OF QUADROCOPTER FOR MONITORING OF SEA WATERS

Міжнародний науково-технічний журнал "Проблеми керування та інформатики"
Based on optimization of motion trajectories, the synthesis of robust-optimal control system for the multidimensional nonlinear model of quadrocopter is considered.
В.Л. Тимченко, Д.О. Лебедєв   +1 more
doaj   +1 more source

Proglacial lake evolution coincident with glacier dynamics in the frontal zone of Kvíárjökull, South‐East Iceland

Earth Surface Processes and Landforms, Volume 49, Issue 5, Page 1487-1502, April 2024.
Interaction of ice‐contact lake and a glacier terminus is described in a highly dynamic Icelandic glacier. We identified main factors controlling development of the glacier terminus: variable subglacial topography, fast ice flow and debris cover insulating effect.
Jan Kavan, Radim Stuchlík, Jonathan L. Carrivick, Martin Hanáček, Christopher D. Stringer, Matěj Roman, Jakub Holuša, Pavla Dagsson‐Waldhauserová, Kamil Láska, Daniel Nývlt   +9 more
wiley   +1 more source