نتایج جستجو برای: uav unmanned aerial vehicle

تعداد نتایج: 143003  

2012
Igor Astrov Andrus Pedai

This paper focuses on a critical component of the situational awareness (SA), the control of autonomous vertical flight for an unmanned aerial vehicle (UAV). Autonomous vertical flight is a challenging but important task for tactical UAVs to achieve high level of autonomy under adverse conditions. With the SA strategy, we proposed a two stage flight control procedure using two autonomous contro...

2009
Lars Kuhnert Markus Ax Matthias Langer Duong Nguyen Van Klaus-Dieter Kuhnert

This paper describes an absolute localisation method for an unmanned ground vehicle (UGV) if GPS is unavailable for the vehicle. The basic idea is to combine an unmanned aerial vehicle (UAV) to the ground vehicle and use it as an external sensor platform to achieve an absolute localisation of the robotic team. Beside the discussion of the rather naive method directly using the GPS position of t...

2016
A. Alaimo

In this paper the mathematical model representing the dynamic of a Unmanned Aerial Vehicle (UAV) is studied in order to analyse its behaviour. In order to stabilize the entire system, linear Quadratic Regulator (LQR) control is used in such a way to set both PD and PID controls in position variables. A set simulation is performed to carry out the results for linear and non linear models. The LQ...

2017
SUNANDA LONA ASOK KUMAR

With the evolution of high power density battery, cheap air frames, powerful microprocessors etc. Unmanned aerial vehicle (UAV) started playing a great role in various areas like traffic monitoring, aerial surveillance, hurricane hunting and so on. The UAV's used for these purposes are usually flown at low altitudes, almost below 1000m. Flying at such low altitudes make the UAV easy to crash. T...

2015
Lan Zhang Bing Wang Weilong Peng Chao Li Zeping Lu Yan Guo

This software provides functions on processing UAV (unmanned aerial vehicle) aerial image data according to the requirements of forestry area application on UAV platform. It gives a real-time and remote watch on fire in Greater Xing’ an Mountains, simultaneously the UAV is flying and getting the aerial data, helping users quickly master the number and location of fire points. Monitoring softwar...

2015
Lan Zhang Bing Wang Weilong Peng Chao Li Zeping Lu Yan Guo

This software provide functions on processing UAV (unmanned aerial vehicle) aerial image data according to the requirements of forestry area application on UAV platform. It gives a real-time and remote watch on fire in Greater Xing’ an Mountains, simultaneously the UAV is flying and getting the aerial data, helping users quickly master the number and location of fire points. Monitoring software...

2011
S. Robinson

This study is the first to use an Unmanned Aerial Vehicle (UAV) for mapping moss beds in Antarctica. Mosses can be used as indicators for the regional effects of climate change. Mapping and monitoring their extent and health is therefore important. UAV aerial photography provides ultra-high resolution spatial data for this purpose. The aim of this study is to use Structure from Motion (SfM) tec...

2011
Oleg A. Yakimenko Eugene A. Bourakov Charles W. Hewgley Nathan J. Slegers P. Jensen Andrew B. Robinson Josh R. Malone Phil E. Heidt

Abbreviations AADS = autonomous aerial delivery system ADS = aerial delivery system CEP = circular error probable C = command and control IED = improvised explosive device GNC = guidance, navigation and control GPS = Global Positioning System GSM = Global System for Mobile (Communications) MCCC = mission C center PATCAD = Precision Airdrop Technology Conference and Demonstration SA = situationa...

2004
Henri Eisenbeiss

In the last years UAV (Unmanned Aerial Vehicle)-systems became relevant for applications in precision farming and in infrastructure maintenance, like road maintenance and dam surveillance. This paper gives an overview about UAV (Unmanned Aerial Vehicle) systems and their application for photogrammetric recording and documentation of cultural heritage. First the historical development of UAV sys...

2014
Abdel Ilah Alshbatat Peter James Vial Liang Dong

An unmanned aerial vehicle (UAV) is an aircraft capable of flight without a human operator. This aircraft can be controlled remotely or autonomously via a preprogrammed flight path. A quadrotor UAV is one of the best unmanned aerial vehicles. It is an aircraft whose lift is generated by four DC motors and it is able to take off and land vertically. It also has the advantage that it can be contr...

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