Results 221 to 230 of about 10,960 (257)
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Finding Bearing in Robot Navigation with the Use of the Kalman Filter
Solid State Phenomena, 2013In robotic systems navigation, it is necessary to determine the direction, in which the local coordinate system of a robot is to be turned in regards to the reference, global system. That direction from mathematical point of view is the rotation along one axis of the reference system, such that the reference system coincides with the local system ...
Andrzej Sioma, Sławomir Blok
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Linear bearing device as a solution for optical navigation of fine needle procedures
Technology and Health Care, 2010Background: Optical navigation of needles < 1 mm diameter remains a challenging task. Bending of these tools is the limiting factor. Objective: To use a conventional optical navigation system for interventional fine needle procedures. Materials and methods: A novel custom-made device was constructed to guide the needle in the direction of the planned ...
Stüber, Volker +6 more
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Joint Line Changes After Navigation-Assisted Mobile-Bearing TKA
Orthopedics, 2009The purpose of this study was to analyze the clinical results of patients who underwent navigation-assisted cruciate ligament retention-type mobile-bearing total knee arthroplasty (TKA) according to joint line changes. From September 2004 to January 2006, cruciate ligament retention-type mobile-bearing TKAs were performed using a navigation system ...
Jae-Hyuk, Yang +3 more
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GES source localization and navigation based on discrete-time bearing measurements
52nd IEEE Conference on Decision and Control, 2013This paper addresses the problems of source localization and navigation based on discrete-time single direction measurements, in 3-D, in addition to relative velocity readings. For source localization, an agent aims at estimating the position of a source relative to itself, while for navigation the agents aims to estimate its own position assuming that
Pedro Tiago Martins Batista +2 more
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2020 American Control Conference (ACC), 2020
This paper presents a decentralized navigation system, capable of estimating positions and fluid velocities, for vehicle formations. Some vehicles have access to a measurement of their own position while the others have access to one or more bearing measurements and may have a depth measurement.
David Santos, Pedro Batista 0001
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This paper presents a decentralized navigation system, capable of estimating positions and fluid velocities, for vehicle formations. Some vehicles have access to a measurement of their own position while the others have access to one or more bearing measurements and may have a depth measurement.
David Santos, Pedro Batista 0001
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Observability Criteria and Unobservable Maneuvers for In-Orbit Bearings-Only Navigation
Journal of Guidance, Control, and Dynamics, 2014This paper provides an analytical derivation of the observability conditions for in-orbit bearings-only navigation that can also be used to solve for the conditions under which unobservable maneuvers occur. The derivation is performed in a rigorous yet relatively simple manner by attempting to solve for the initial conditions in a discrete formulation ...
Jonathan Grzymisch, Walter Fichter
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Computer Navigation: Improving Outcomes with Hard on Hard Bearings
2007The design and manufacture of ceramic implants has improved significantly over the last decade. Consequently the use of ceramic-on-ceramic bearings in total hip replacement has become increasingly popular with over 150,000 components having been implanted in Europe [1].
Robert G. Middleton +2 more
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One-step rendezvous guidance for improving observability in bearings-only navigation
Advances in Space Research, 2020Abstract In spacecraft rendezvous, bearings-only navigation generally suffers from a lack of observability in range direction. Therefore, dedicated orbital maneuvers are essential to improve the observability and meet the navigation requirement. This paper proposes a simple one-step guidance method for improving observability.
Sung-Hoon Mok +2 more
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A Spherical Coordinate Parametrization for an In-Orbit Bearings-Only Navigation Filter
2013In-orbit rendezvous is a key enabling technology for many space missions. Implementing it employing only bearing measurements would simplify the relative navigation hardware currently required, increasing robustness and reliability by reducing complexity, launch mass and cost.
Jonathan Grzymisch +3 more
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A Reverse Bearings Only Target Motion Analysis for Autonomous Underwater Vehicle Navigation
IEEE Transactions on Mobile Computing, 2019We present a non-linear navigation solution, referred to as the Reverse Bearing Only Target Motion Analysis (Reverse BO-TMA). Reverse BO-TMA is a passive method for the self-localization of an Autonomous Underwater Vehicle (AUV). Our method relies solely on bearing measurements based on the radiated noise of a passing vessel sailing along a known route.
Talmon Alexandri, Roee Diamant
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