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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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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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Autonomous navigation using received signal strength and bearing-only pseudogradient interpolation
Robotics and Autonomous Systems, 2016Autonomous mobile robots (AMRs) interacting with an a priori distributed wireless sensor network (WSN) in a region can address the three-tier challenge of navigating in unknown environments: (i) identifying target locations, (ii) planning paths to the targets, and (iii) efficiently executing the navigation paths to the targets.
Nikhil Deshpande +3 more
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Long range acoustic navigation of cruising AUV based on bearing estimation
OCEANS'10 IEEE SYDNEY, 2010In this paper, a basic study on acoustic navigation for long range cruising AUV is described. Typically the position of AUV can be estimated by measuring the range between the AUV and acoustic sources or bearing of the acoustic signal. In long range observation, it is difficult to estimate these parameters in three dimensional.
Y. Watanabe +3 more
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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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Deviations between intra-operative navigation data and post-operative weight-bearing X-rays
Computer Aided Surgery, 2010Several studies have shown that computer-navigated TKA reduces the rate of outliers. Thirty-one consecutive patients were operated on by the same surgeon using a computer assisted navigation system. Data collected by the system included the final mechanical axis of the extremity (HKA angle) and the coronal angle of the tibial and femoral implants ...
I, Livshetz +4 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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A Navigation system of mobile robot based on bearing measurements of beacons
2017 International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM), 2017The problem of navigation and control of movement of wheeled mobile robot by bearing of the reference beacons is considered. The quality criteria of controllable motion of such robots are revealed, the formalism of nonholonomic mechanics used for constructing their mathematical models is briefly considered.
I. V. Voinov +2 more
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Learning Autonomous Underwater Navigation with Bearing-Only Data
Recent applications of deep reinforcement learning in controlling maritime autonomoussurface vessels have shown promise for integration into maritime transportation. These could have the potential to reduce at-sea incidents such as collisions and groundings which are majorly attributed to human error.openaire +2 more sources
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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