Navigation of unmanned aerial vehicles in GPS denied environments

... acceleration of gravity h NED frame altitude Jxx rolling moment of inertia Jyy pitching moment of inertia Jzz yawing moment of inertia KI integral gains of the embedded controller KP proportional gains of ... points [8], uniform subsampling of all the points [77], random sampling of the points [52], or using points with high intensities plus illumination information [83] Using...

Ngày tải lên: 09/09/2015, 08:16

... density Lithium Polymer batteries and more efficient and compact actuators, thus resulting in the rapid development of unmanned aerial vehicles The vertical take-off and landing (VTOL) crafts due their ... creation of intelligent unmanned aerial vehicles, such as a sophisticated unmanned helicopter equipped with a vision enhanced navigation system [6], [7], [8] Uti...

Ngày tải lên: 09/09/2015, 08:18

... advanced indoor navigation systems for miniature unmanned aerial vehicles (UAVs) has aroused worldwide interests because of its great potential in military and civil applications [58, 67] Indoor navigation ... This thesis aims to develop an advanced indoor navigation system for unmanned aerial vehicles Two different UAV platforms have been developed as test beds...

Ngày tải lên: 09/09/2015, 11:15

... obtained after including the unknown obstacle in the data base and starting again the planning [15] In fact the main penalization due to unknown obstacles is the decreasing of the linear speed of ... to the actual characteristics of the robot This means that the rough and manual tuning of the parameters of the fuzzy controller is replaced by a fine local automatic tuning and...

Ngày tải lên: 23/10/2013, 15:15

... SYSTEM DESIGN METHODOLOGY AND IMPLEMENTATION OF MICRO AERIAL VEHICLES SWEE KING PHANG (B Eng (Hons.), NUS) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY NUS GRADUATE ... movements J Moment of inertia of MAV fuselage J Rotor inertia Jx Rolling moment of inertia of MAV fuselage Jy Pitching moment of inertia of MAV fuselage Jz Yawing moment of iner...

Ngày tải lên: 09/09/2015, 08:15

... the vertical replenishment vii List of Figures 1.1 Vertical replenishment by U.S Navy (Use of released U.S Navy imagery does not constitute product or organizational endorsement of any kind by ... 1.2 NUS2 TLion developed by NUS UAV Group 2.1 Aerial robots developed by NUS Unmanned Aerial Vehicle Research Group 2.2 Hardware configuration ... 1.1: Vertical replenishm...

Ngày tải lên: 30/09/2015, 09:23

... work done for collision avoidance algorithms and sensors that are implemented on flight platforms on unmanned aerial vehicles There have been a substantial amount of research on collision avoidance ... related work will be discussed Before moving to collision avoidance in aerial vehicles, a study of the collision avoidance algorithms that have been developed for g...

Ngày tải lên: 03/10/2015, 20:58

... (NSRA), including the Guide to Navigating through the Northern Sea Route (NSR Navigation Guide) and the Requirements for the Design, Equipment and Supplies of Vessels Navigating the Northern Sea Route ... adjoining the USSR northern coast and that it includes seaways suitable for guiding vessels in ice Due to the vagueness concerning leading in Artic...

Ngày tải lên: 01/11/2013, 09:20

... environments Some examples of SLAM applied to aerial vehicles can be found in [5–7] There also exist other kinds of terrain navigation methods which are not based on aerial images but on terrain elevation ... part by the National Aeronautics Research Program NFFP04-S4202, the Swedish Foundation for Strategic Research (SSF) Strategic Research Center MOVIII, the Swedish Research C...

Ngày tải lên: 21/06/2014, 20:20

... DESIGN OPTIMIZATION OF SMALL- SCALE UNMANNED AIR VEHICLES NG TZE HUI THOMAS (B.Eng (Hons.), NUS) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY IN ENGINEERING DEPARTMENT OF MECHANICAL ... this thesis, new design methodologies have been developed for the design of small- scale unmanned air vehicle (UAV) and micro air vehicle (MAV) It is well known...

Ngày tải lên: 14/09/2015, 10:33

... goal of controlling small- scale UAV helicopter: fully autonomy with the human-intelligence level CHAPTER 1.3 Small- scale UAV Helicopter Research in NUS The research on small- scale UAV helicopters ... smaller, lighter, and cheaper than before As such, the development of small- scale UAV helicopters becomes much more popular than CHAPTER ever Compared with its full -sca...

Ngày tải lên: 14/09/2015, 14:13

... 33 iv COASE AND CAR REPAIR: WHO SHOULD BE RESPONSIBLE FOR EMISSIONS OF VEHICLES IN USE? Winston Harrington and Virginia D McConnell* Soon after the Federal emission standards for new motor vehicles ... Coase and Car Repair: Who Should Be Responsible for Emissions of Vehicles in Use? Winston Harrington and Virginia D McConnell Abstrac...

Ngày tải lên: 07/12/2015, 02:17

... modify a page of data at a time An attempt by a reader to write previously read data causes a memory fault which converts a reader into a writer and invalidates all other page caches A subsequent attempt ... when it initiates a cache replacement A data manager may restrict the use of cached data by issuing a pager_data_lock request, specifying the types of ac...

Ngày tải lên: 12/09/2012, 15:05

... size of the Internet, let alone to make an estimation of the amount of information that is available on or through it; • The dynamic nature of the information on Internet: information that cannot ... Theory Intelligent Software Agents in Practise Intelligent Software Agents in Practise 3.1 Applications of Intelligent Agents The current app...

Ngày tải lên: 08/10/2012, 15:22