نتایج جستجو برای: uav

تعداد نتایج: 11520  

2016
Kai Chang Yuanqing Xia Kaoli Huang

This paper considers the artificial potential field method combined with rotational vectors for a general problem of multi-unmanned aerial vehicle (UAV) systems tracking a moving target in dynamic three-dimensional environment. An attractive potential field is generated between the leader and the target. It drives the leader to track the target based on the relative position of them. The other ...

2010
Florian Horstmann Birgit Schulze

Untersuchungen haben gezeigt, dass es einen Zusammenhang zwischen der spektralen Information und dem Zustand eines Pflanzenbestandes gibt. Solche Daten können bei einer sinnvollen Interpretation für das teilflächenspezifische Management eines Schlages eingesetzt werden. Ziel dieser Studie war, den Einsatz eines ferngesteuerten UAV (unmanned aerial vehicle) zur Erfassung von multispektralen Refl...

2014
Fariz Outamazirt Fu Li Lin Yan Abdelkrim Nemra

Although nonlinear H∞ (NH∞) filters offer good performance without requiring assumptions concerning the characteristics of process and/or measurement noises, they still require additional tuning parameters that remain fixed and that need to be determined through trial and error. To address issues associated with NH∞ filters, a new SINS/GPS sensor fusion scheme known as the Fuzzy Adaptive Nonlin...

2014
Wei Meng Zhirong He Rodney Teo Rong Su Ahmad Reza Shehabinia Liyong Lin Lihua Xie

This paper considers integrated target search, tasking and tracking using multiple fixed-wing UAVs in urban environments. The problem is to design autonomy for each individual UAV autonomous and distributed tasking. Control logic design based on finite state automaton (FSA) model, integrating the four modes of operations, i.e., takeoff mode, fly-to-AO (area of operation) mode, search mode and t...

2014
Francesco Nex Fabio Remondino F. Nex

Unmanned Aerial Vehicle (UAV) platforms are nowadays a valuable source of data for inspection, surveillance, mapping and 3D modeling issues. As UAVs can be considered as a lowcost alternative to the classical manned aerial photogrammetry, new applications in the shortand close-range domain are introduced. Rotary or fixed wing UAVs, capable of performing the photogrammetric data acquisition with...

2008
Carole G. Prévost André Desbiens Eric Gagnon Daniel Hodouin

Effective target tracking and collision avoidance schemes are essential to the success of unmanned aerial vehicle (UAV) missions. In a dynamic environment, UAV path planning often relies on predicted obstacle and target motion. This paper presents an algorithm that predicts the trajectory of a moving object (target or obstacle) detected by a UAV. An extended Kalman filter is first employed to e...

Journal: :CoRR 2018
Subin Eom Hoon Lee Junhee Park Inkyu Lee

This paper studies unmanned aerial vehicle (UAV) aided wireless communication systems where a UAV supports uplink communications of multiple ground nodes (GNs) while flying over the area of the interest. In this system, the propulsion energy consumption at the UAV is taken into account so that the UAV’s velocity and acceleration should not exceed a certain threshold. We formulate the minimum av...

2013
Yang Yang Guangmin Sun Dequn Zhao Bo Peng

At present, in order to get a large field of view image, image mosaic technique has been widely applied in UAV remote sensing platform. The traditional mosaic system for UAV remote sensing image takes a lot of time and man power, it is difficult to complete the image stitching automatically. In the paper, an approach for geometric correction of remote sensing image without any ground control po...

2018
Xiaowen Cao Jie Xu Rui Zhang

This paper studies a new mobile edge computing (MEC) setup where an unmanned aerial vehicle (UAV) is served by cellular ground base stations (GBSs) for computation offloading. The UAV flies between a give pair of initial and final locations, during which it needs to accomplish certain computation tasks by offloading them to some selected GBSs along its trajectory for parallel execution. Under t...

2012
Anna Bourmistrova Sergey Khantsis

This chapter presents a methodology which is developed to design a controller that satisfies the objectives of shipboard recovery of a fixed-wing UAV. The methodology itself is comprehensive and should be readily applicable for different types of UAVs and various task objectives. With appropriate modification of control law representation, the methodology can be applied to a broad range of cont...

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