Results 11 to 20 of about 2,899,722 (286)
SensorsTo address the challenges of low accuracy in indoor positioning caused by factors such as signal interference and visual distortions, this paper proposes a novel method that integrates ultra-wideband (UWB) technology with visual positioning.
Huizhen Mu +5 more
doaj +2 more sources
Accuracy of positioning data on smartphones
Proceedings of the 3rd International Workshop on Location and the Web, 2010 This contribution investigates how accurate location information is on smartphones. Our research is based on a data set consisting of 2289 locations gathered from a marketed iPhone application.
Florian Michahelles +1 more
core +2 more sources
The Accuracy and Efficiency of Posit Arithmetic [PDF]
2021 IEEE 39th International Conference on Computer Design (ICCD), 2021 Motivated by the increasing interest in the posit numeric format, in this paper we evaluate the accuracy and efficiency of posit arithmetic in contrast to the traditional IEEE 754 32-bit floating-point (FP32) arithmetic. We first design and implement a Posit Arithmetic Unit (PAU), called POSAR, with flexible bit-sized arithmetic suitable for ...
Stefan Dan Ciocirlan +4 more
openaire +3 more sources
Precise positioning in real-time using GPS-RTK signal for visually impaired people navigation system [PDF]
, 2010 This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University, 24/9/2010.This thesis presents the research carried out to investigate and achieve highly reliable and accurate navigation system of guidance for visually ...
Al-Salihi, Nawzad Kameran
core +7 more sources
Enhanced Positioning Techniques for Hybrid Wireless Networks [PDF]
, 2011 The objective of this paper is to propose a reliable and accurate positioning method, which provides location estimates for the mobile user in hybrid wireless network (IEEE802.11/WiFi, IEEE802.16/WiMAX and LTE technologies).
Zvikhachevskaya, Anna +4 more
core +4 more sources
Automatic measurement of beam-positioning accuracy at off-isocenter positions. [PDF]
J Appl Clin Med Phys, 2023 AbstractPurposeThis study performed an automatic measurement of the off‐axis beam‐positioning accuracy at a single isocenter via the TrueBeam Developer mode and evaluated the beam‐positioning accuracy considering the effect of couch rotational errors.MethodsTrueBeam STx and the Winston–Lutz test‐dedicated phantom, with a 3 mm diameter steel ball, were ...
Ono T +5 more
europepmc +3 more sources
Satellite Positioning Accuracy Improvement in Urban Canyons Through a New Weight Model Utilizing GPS Signal Strength Variability. [PDF]
Sensors (Basel)Urban environments present substantial obstacles to GPS positioning accuracy, primarily due to multipath interference and limited satellite visibility. To address these challenges, we propose a novel weighting approach, referred to as the HK model, that ...
Kim HI, Park KD.
europepmc +2 more sources
Alexandria Engineering Journal, 2021 Positioning is a widely used technology in wireless sensor network (WSN). For range-based positioning, the positioning accuracy is proportional to positioning accuracy. As a low-cost positioning method, the range-based received signal strength indicator (
Junchao Tang, Jianhui Han
doaj +1 more source
Experimental Research of Triple Inertial Navigation System Shearer Positioning
Micromachines, 2023 In order to improve the positioning accuracy of shearers, the overground experimental device based on the positioning model of TINS (Triple Inertial Navigation System) was built.
Cheng Lu +4 more
doaj +1 more source
Development of Precise Point Positioning Method Using Global Positioning System Measurements [PDF]
Journal of Astronomy and Space Sciences, 2011 Precise point positioning (PPP) is increasingly used in several parts such as monitoring of crustal movement and maintaining an international terrestrial reference frame using global positioning system (GPS) measurements.
Byung-Kyu Choi +4 more
doaj +1 more source