Results 1 to 10 of about 2,899,722 (286)

Positioning Accuracy in Holographic Optical Traps [PDF]

open access: yesMicromachines, 2021
Spatial light modulators (SLMs) have been widely used to achieve dynamic control of optical traps. Often, holographic optical tweezers have been presumed to provide nanometer or sub-nanometer positioning accuracy.
Frederic Català-Castro   +1 more
doaj   +5 more sources

Analysis and Improvement of Indoor Positioning Accuracy for UWB Sensors [PDF]

open access: yesSensors, 2021
Ultra-wideband (UWB) sensors have been widely applied to indoor positioning. The indoor positioning of UWB sensors usually refers to the positioning of the mobile node that interacts with the anchors through radio for calculating the distance between the
Leehter Yao, Lei Yao, Yeong-Wei Wu
doaj   +4 more sources

Application of LSTM Network to Improve Indoor Positioning Accuracy [PDF]

open access: yesSensors, 2020
Various indoor positioning methods have been developed to solve the “last mile on Earth”. Ultra-wideband positioning technology stands out among all indoor positioning methods due to its unique communication mechanism and has a broad application prospect.
Dongqi Gao   +3 more
doaj   +2 more sources

Determination of Navigation System Positioning Accuracy Using the Reliability Method Based on Real Measurements

open access: yesRemote Sensing, 2021
In navigation, the Twice the Distance Root Mean Square (2DRMS) is commonly used as a position accuracy measure. Its determination, based on statistical methods, assumes that the position errors are normally distributed and are often not reflected in ...
Mariusz Specht
doaj   +3 more sources

RDTS-Based Two-Dimensional Temperature Monitoring with High Positioning Accuracy Using Grid Distribution

open access: yesSensors, 2019
A novel two-dimensional (2D) positioning method based on Raman distributed temperature sensing (RDTS) has been reported to dramatically improve positioning accuracy. Using a well-designed 2D distribution of optical fiber and corresponding algorithms, the
Can Zhang, ZhongXie Jin
doaj   +3 more sources

Relationship between ISO 230-2/-6 Test Results and Positioning Accuracy of Machine Tools Using LaserTRACER

open access: yesApplied Sciences, 2016
To test the positioning accuracy and repeatability of the linear axes of machine tools, ISO (International Standards Organization) 230-2 and ISO 230-6 are usually adopted.
Hau-Wei Lee   +4 more
doaj   +3 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

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

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