Results 11 to 20 of about 73,817 (260)

Relative expressive power of navigational querying on graphs [PDF]

Information Sciences, 2015
An extended abstract announcing the results of this paper was presented at the 14th International Conference on Database Theory, Uppsala, Sweden, March ...
George H. L. Fletcher, Marc Gyssens, Dirk Leinders, Dimitri Surinx, Jan Van den Bussche, Dirk Van Gucht, Stijn Vansummeren, Yuqing Wu   +7 more
openaire   +6 more sources

Relative navigation and control of a hexacopter

2012 IEEE International Conference on Robotics and Automation, 2012
This paper discusses the progress made on developing a multi-rotor helicopter equipped with a vision-based ability to navigate through an a priori unknown, GPS-denied environment. We highlight the backbone of our system, the relative estimation and control.
Robert C. Leishman, John Macdonald, Timothy W. McLain, Randy W. Beard   +3 more
openaire   +2 more sources

A survey on terrain based navigation for AUVs [PDF]

, 2010
Terrain Based Navigation (TBN) is a method rootedto the early cruise missile navigation systems, when GPS wasnot yet available. For decades, TBN has been applied as acomplementary system to INS navigation for Unmanned AerialVehicles (UAV).
Petillot, Yvan, Wilson, P.A., Philip Wilson, Petillot, Yvan; id_orcid, Yvan Petillot, Wilson, P. A., Carreno, Sebastian, Ridao, Pere, Sebastian Carreno, Wilson, Philip, Pere Ridao   +10 more
core   +1 more source

Control of rodent and human spatial navigation by room and apparatus cues [PDF]

, 2009
A growing body of literature indicates that rats prefer to navigate in the direction of a goal in the environment (directional responding) rather than to the precise location of the goal (place navigation).
Redhead, Edward S., Hamilton, Derek A., Johnson, Travis E., Verney, Steven P.   +3 more
core   +1 more source

Ultrasound-aided pedestrian dead reckoning for indoor navigation [PDF]

, 2008
Ad hoc solutions for tracking and providing navigation support to emergency response teams is an important and safety-critical challenge. We propose a navigation system based on a combination of foot-mounted inertial sensors and ultrasound beacons.
Mike Hazas, Hazas, Mike, Muthukrishnan, Kavitha, Kavitha Muthukrishnan, Hans Gellersen, Carl Fischer, Fischer, Carl, Hazas, Michael, Gellersen, Hans   +8 more
core   +1 more source

The Four Key Challenges of Advanced Multisensor Navigation and Positioning [PDF]

, 2014
The next generation of navigation and positioning systems must provide greater accuracy and reliability in a range of challenging environments to meet the needs of a variety of mission-critical applications.
Martin, H, Jiang, Z, Henry Martin, Groves, PD, Wang, L, Lei Wang, Ziyi Jiang, Walter, D, Voutsis, K, Kimon Voutsis, Debbie Walter, Paul D Groves   +11 more
core   +1 more source

Relative Navigation in UAV Applications

International Journal of Aviation Science and Technology, 2020
This paper is committed to the relative navigation of Unmanned Aerial Vehicles (UAVs) flying in formation flight. The concept and methods of swarm UAVs technology and architecture have been explained. The relative state estimation models of unmanned aerial vehicles which are based on separate systems as Inertial Navigation Systems (INS)&Global ...
Tuncay Yunus Erkec, Chingiz Hajiyev
openaire   +2 more sources

Angles-only Navigation to a Non-Cooperative Satellite using Relative Orbital Elements

, 2012
This work addresses the design and implementation of a prototype relative navigation tool that uses camera-based measurements collected by a servicer spacecraft to perform far- range rendezvous with a non-cooperative client in low Earth orbit.
S. D'amico, Ardaens, J.-S., Gaias, Gabriella, J-S Ardaens, D'Amico, Simone, G. Gaias   +5 more
core   +1 more source

Relative Navigation to Non-Cooperative Targets in LEO: Achievable Accuracy from Radar Tracking Measurements

, 2013
Any future space debris removal or on-orbit servicing mission faces the problem of the initial relative orbit determination of the servicing satellite to the non-cooperative target.
Letsch, Klemens, Spiridonova, Sofya, Weigel, Martin, Kirschner, Michael, Kahr, Erin, Kahle, Ralph   +5 more
core   +1 more source

Angles-Only Relative Navigation Activities during AVANTI

, 2017
This contribution addresses the realization of angles-only relative navigation systems as means to approach noncooperative target objects flying in low Earth orbits.
Ardaens J. -S., Gaias, Gabriella, Ardaens, Jean-Sébastien, Gaias G.   +3 more
core   +1 more source