Results 31 to 40 of about 2,899,722 (286)
A Wi-Fi Indoor Positioning Method Based on an Integration of EMDT and WKNN
, 2022 In indoor positioning, signal fluctuation is one of the main factors affecting positioning accuracy. To solve this problem, a new method based on an integration of the empirical mode decomposition threshold smoothing method (EMDT) and improved weighted K
Teng, Jing +7 more
core +1 more source
A Vessel Position Precision Analysis Based on a Two-Star Combined Approach
Journal of Marine Science and EngineeringTraditional celestial navigation mainly utilized the sextant to measure the attitude and the position contour method to calculate and resolve the vessel’s positioning problem, but these methods are not rigorous, having major deficiencies in the ...
Yulin Wu +4 more
doaj +1 more source
High accuracy satellite positioning
, 2023 Septentrio’s ‘agnostic’ partner program. Shared service for sub-decimeter positioning accuracy to end ‘wild west’ of GPS/GNSS corrections ecosystems.
Neil McNaughton
core +1 more source
Ultrasonic Array-Based Multi-Source Fusion Indoor Positioning Technology
SensorsUnderground mining involves numerous risks, such as collapses, gas leaks, and explosions, posing significant threats to worker safety. In this work, we develop an indoor localization system that uses Bluetooth for coarse positioning and ultrasonic arrays
Cong Li +5 more
doaj +1 more source
The Positioning Technology for Underwater Wireless Optical Communication Systems
Guangtongxin yanjiu, 2023 In recent years, with the continuous promotion of the " Ocean Power" strategy, Underwater Wireless Optical Communication (UWOC) has played an important role in marine military, underwater environment monitoring, submarine oil exploration and marine ...
ZHANG Teng-xiao, QIU Yang
doaj
Three Dimensional Evaluation of Accuracy of Bracket Positioning
Journal of Pharmacy and Bioallied Sciences, 2023 ABSTRACT Introduction: The success of orthodontic treatment depends on accurate bracket placement, so researchers are constantly exploring new direct and indirect bonding methods with the help of cutting-edge imaging technologies like cone beam computed tomography (CBCT), which provides full ...
Kapil Kamal Kishor Fafat +5 more
openaire +3 more sources
Polish DGPS System: 1995–2017 – Study of Positioning Accuracy
Polish Maritime Research, 2019 This paper is the fourth in a series of publications presenting the process of installation, testing and long-term assessment of the navigational parameters of the Polish DGPS system. This series of publications intends to present – to the general public
Specht Cezary +4 more
doaj +1 more source
Positioning performance analysis on combined GPS/BDS precise point positioning
Geodesy and Geodynamics, 2020 Combining the observation data from five Multi-GNSS Experiment (MGEX) stations with the precise orbit and clock products from Global Positioning System (GPS) and BeiDou Navigation Satellite System (BDS), we studied the model of combined GPS/BDS precise ...
Jing Xiong, Fei Han
doaj +1 more source
Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Background Japan has one of the highest dialysis prevalence rates worldwide and a shrinking, aging population. Whether dialysis burden has entered a sustained post‐peak phase or whether recent declines partly reflect pandemic‐related disruptions remains uncertain.
Hatice Şahin +2 more
wiley +1 more source
Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Introduction Hyperlipidemia is a major risk factor for atherosclerotic cardiovascular disease (ASCVD). Although statins are the cornerstone of lipid‐lowering therapy, their use may be limited in some patients by adverse effects. This study evaluated the possible impact of non‐drug treatment using double‐filtration plasmapheresis (DFPP) on CD14+
Yun Cheng +3 more
wiley +1 more source