نتایج جستجو برای: uav

تعداد نتایج: 11520  

Performance characteristic of an Unmanned Air Vehicle (UAV) is investigated using a newly developed heuristic approach. Almost all flight phases of any air vehicle can be categorized into trim and maneuvering flights. In this paper, a new envelope called trim-ability envelope, is introduced and sketched within the conventional flight envelope for a small UAV. Optimal maneuverability of the inte...

The Unmanned Aerial Vehicles (UAV) positioning in the outdoor environment is usually done by the Global Positioning System (GPS). Due to the low power of the GPS signal at the earth surface, its performance disrupted in the contaminated environments with the jamming attacks. The UAV positioning and its accuracy using GPS will be degraded in the jamming attacks. A positioning error about tens of...

2017
Le Yu Qian Liu

Unmanned Aerial Vehicle (UAV) is a kind of new operational platform possessing ability to flight autonomously and perform independently a task,which can not only carry out non-attack tasks,such as military reconnaissance, surveillance and search, but also to carry out tasks to air-to-ground attacking, target bombing and so on. With the rapid development of UAVtechnology, more and more UAV will ...

2012
Khairul Nizam Tahar

This study proposes a generic approach for photogrammetric survey using unmanned aerial vehicle (UAV). UAV is one of the powerful equipment that can be used to obtain the earth surface images from certain altitude. UAV can provide a high quality data for GIS analysis. In this study, two persons are needed; UAV operator and ground crew station. A complete set of fixed wing UAV with autonomous fl...

2013
Hyeok-June Jeong Young-Guk Ha

This paper describes secure control architecture for UAV control system for multiple operator environments. Multiple access of UAV is necessary because UAV must capture and process various data and UAV's functions become more complex and diverse. From this perspective, UAV control system needs to be secure because new control system will be exposed to multiple operators. To discuss this issue, ...

2017
Qiang Wang

With the rapid development of micro-electric and computer technology, multi-UAV has drawn much attention. Multi-UAV has become an important research topic in recent years and the major domestic and foreign scientific research institutions, commercial companies, military institutions are carried thoroughly research to it.In this paper, the development process of multi-UAV are introduced and some...

Journal: :journal of advances in computer engineering and technology 0
ehsan abbasi school of mechanical engineering,university of tehran,tehran,iran

the studies in aerial vehicles modeling and control have been increased rapidly recently. in this paper , a coordination of two types of heterogeneous robots , namely unmanned aerial vehicle (uav) and unmanned ground vehicle (ugv) is considered. in this paper the uav plays the role of a virtual leader for the ugvs. the system consists of a vision- based target detection algorithm that uses the ...

2013
Chao Yun Xiao-Min Li

Mathematical simulation method can be adopted to check flight characteristic of UAV, also can be adopted to simulate hardware experiments of unmanned aerial vehicle (UAV), then related flight experiments can be performed. The simulation method can reduce the flight periods, cost and risk. UAV flight model research play an important role in simulation and modeling in initialize periods of the UA...

2004
Dianxiang Xu Priti Borse Ken Grigsby Kendall E. Nygard

This paper presents a Petri net-based hierarchical architecture for multiple Unmanned Aerial Vehicle (UAV) simulations in order to facilitate rapid prototyping via visual modeling and analysis. Using high-level Colored Petri nets, we specify UAV control structure by a hierarchy of mission control net and task nets: the mission control net, built upon task nets, models the decision making proces...

2014
Gao Xi jun Chen Zi li Hu Yong Jiang

Based on the three-dimensional GBSBCM (geometrically based double bounce cylinder model) channel model of MIMO for unmanned aerial vehicle (UAV), the simple form of UAV space-time-frequency channel correlation function which includes the LOS, SPE, and DIF components is presented. By the methods of channel matrix decomposition and coefficient normalization, the analytic formula of UAV-MIMO norma...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید