نتایج جستجو برای: unmanned aerial vehicles uavs

تعداد نتایج: 87647  

2007
Ricky E. Sward Stephen D. Cooper Clint H. Sparkman

2007
Fadi A. Aloul Nagarajan Kandasamy

Unmanned aerial vehicles (UAVs) represent an important class of networked robotic applications that must be both highly dependable and autonomous. This paper addresses sensor deployment problems for distributed failure diagnosis in such networks where multiple vehicles must agree on the fault status of another UAV. Sensor placement is formulated using an integer linear programming (ILP) approac...

2016
Mitchell B. Cruzan Ben G. Weinstein Monica R. Grasty Brendan F. Kohrn Elizabeth C. Hendrickson Tina M. Arredondo Pamela G. Thompson

PREMISE OF THE STUDY Low-elevation surveys with small aerial drones (micro-unmanned aerial vehicles [UAVs]) may be used for a wide variety of applications in plant ecology, including mapping vegetation over small- to medium-sized regions. We provide an overview of methods and procedures for conducting surveys and illustrate some of these applications. METHODS Aerial images were obtained by fl...

2008
H. Claus Christmann Eric N. Johnson

After autonomous flight for Unmanned Aerial Vehicles (UAVs) has been accomplished, research was stipulated to look into application related challenges in connection with Unmanned Aerial Systems (UAS). As one possible scenario, swarms of collaborating UAVs can be envisioned and allow for more complex missions and scenarios. One essential building block in simultaneously operating several UAVs is...

2014
Alexander G. Madey

Unmanned aerial vehicles (UAVs) are being widely used for both military and civilian purposes. The advent of smaller, lighter, less expensive UAVs opens opportunities to deploy a large number of small, semi-autonomous UAVs in a cohesive group or “swarm”. Swarms offer numerous advantages over single UAVs, such as higher coverage, redundancy in numbers and reduced long-range bandwidth requirement...

2004
Linus J. Luotsinen Avelino J. Gonzalez

Unmanned Aerial Vehicles are frequently used for the exploration of a hostile environment. UAVs can be lost or significantly damaged during the exploration process. Although employing multiple UAVs can increase the chance of success, their efficiency depends on the collaboration strategies used. We present a cooperative exploration strategy for UAVs controlled by autonomous agents. The agents a...

2013
Rachael Purta Mikolaj Dobski Artur Jaworski Gregory R. Madey

Unmanned Aerial Vehicles (UAVs) may become the future of military aviation as technology advances, especially sensors and miniaturization techniques. Currently, however, UAVs are controlled individually and require many resources, including ground-based pilots, to function. In our project, we attempt to explore how to remedy this using a Dynamic Data-Driven Application System (DDDAS) to control...

2015
Y. Takahashi H. Chikatsu

Recently, 3D measurements using small unmanned aerial vehicles (UAVs) have increased in Japan, because small type UAVs is easily available at low cost and the analysis software can be created the easily 3D models. However, small type UAVs have a problem: they have very short flight times and a small payload. In particular, as the payload of a small type UAV increases, its flight time decreases....

Journal: :CoRR 2017
Xingqin Lin Vijaya Yajnanarayana Siva D. Muruganathan Shiwei Gao Henrik Asplund Helka-Liina Maattanen Mattias Bergström A Sebastian Euler Y.-P. Eric Wang

Many use cases of unmanned aerial vehicles (UAVs) require beyond visual line-of-sight (LOS) communications. Mobile networks offer wide area, high speed, and secure wireless connectivity, which can enhance control and safety of UAV operations and enable beyond visual LOS use cases. In this article, we share some of our experience in Long-Term Evolution (LTE) connectivity for low altitude small U...

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