Results 21 to 30 of about 2,749,924 (279)

Enhanced Positioning Techniques for Hybrid Wireless Networks [PDF]

open access: yes, 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

IMPLEMENTATION AND IMPROVEMENT OF INDOOR WEARABLE UWB/INS INTEGRATION POSITIONING METHOD [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
Aiming at the problem that the Ultra-Wide-Band (UWB) positioning accuracy is reduced in the Non-Line-of-Sight (NLOS) environment, a UWB positioning accuracy evaluation mechanism is introduced.
Z. Liao, Z. Zheng, Y. Li, Y. Li
doaj   +1 more source

Satellite Positioning Accuracy Improvement in Urban Canyons Through a New Weight Model Utilizing GPS Signal Strength Variability. [PDF]

open access: yesSensors (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

Performance improvement of 5G positioning utilizing multi-antenna angle measurements

open access: yesSatellite Navigation, 2022
Time delay-based the 5th Generation Mobile Communication Technology (5G) positioning is a main method to perform high-precision positioning in Global Navigation Satellite System (GNSS) denied areas.
Wenfei Guo   +4 more
doaj   +1 more source

Multi-station positioning accuracy and enhancement method for 5G

open access: yes物联网学报, 2023
RAT-dependent is a satellite independent positioning technology of 5G.3GPP gives the Cramer-Rao lower bound (CRLB) of the positioning accuracy under the ideal condition of a single station and the simulation positioning accuracy of multi-station under ...
Feilong ZHAO, Lili WANG
doaj   +2 more sources

An improved received signal strength indicator positioning algorithm based on weighted centroid and adaptive threshold selection

open access: yesAlexandria 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

open access: yesMicromachines, 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

Construction and Accuracy Analysis of a BDS/GPS-Integrated Positioning Algorithm for Forests

open access: yesCroatian Journal of Forest Engineering, 2021
The objective of this study was to construct a BeiDou navigation satellite system (BDS)/ global positioning system (GPS)-integrated positioning algorithm that meets the accuracy requirement of forest surveys and to analyze its accuracy to provide ...
Fei Yan, Xueqi Hu, Lidan Xu, Yongrui Wu
doaj   +1 more source

Development of Precise Point Positioning Method Using Global Positioning System Measurements [PDF]

open access: yesJournal 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

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

open access: yes, 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   +11 more
core   +1 more source

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