Results 31 to 40 of about 2,220 (199)

Population fusion optimization algorithm for GNSS integer ambiguity resolution based on PSO and AFSA

工程科学学报
Carrier phase measurement plays a crucial role in achieving rapid and high-precision positioning within a global navigation satellite system (Global navigation satellite system, GNSS).
Yingqing GUO, Yang ZHAN, Yan ZHANG, Yina WANG, Zhaodong XU, Jinbao LI   +5 more
doaj   +1 more source

A method of improving ambiguity fixing rate for post-processing kinematic GNSS data

Satellite Navigation, 2020
Global Navigation Satellite System precise positioning using carrier phase measurements requires reliable ambiguity resolution. It is challenging to obtain continuous precise positions with a high ambiguity fixing rate under a wide range of dynamic ...
Xiaohong Zhang, Yuxi Zhang, Feng Zhu
doaj   +1 more source

Using Dopants as Agents to Probe Key Electronic Properties of Organic Semiconductors

Advanced Electronic Materials, EarlyView.
Dopants are typically used in organic electronics to enhance conductivity, but here their potential is demonstrated as probes for fundamental material properties. By integrating experimental data and multiscale simulations, it is shown how dopant ionization and conductivity measurements enable accurate extraction of ionization potential and Coulomb ...
Artem Fediai, Franz Symalla, Tobias Neumann, Wolfgang Wenzel   +3 more
wiley   +1 more source

The Future of Single-Frequency Integer Ambiguity Resolution

, 2011
The coming decade will bring a proliferation of Global Navigation Satellite Systems (GNSSs) that are likely to enable a much wider range of demanding applications compared to the current GPS-only situation. One such important area of application is single-frequency real-time kinematic (RTK) positioning.
Verhagen, S, Teunissen, Peter, Odijk, D
openaire   +4 more sources

Topological Materials and Related Applications

Advanced Electronic Materials, EarlyView.
This review covers topological materials—including topological insulators, quantum valley Hall and quantum spin Hall insulators, and topological Weyl and Dirac semimetals—as well as their most recent advancements in fields such as spintronics, electronics, photonics, thermoelectrics, and catalysis.
Carlo Grazianetti, Roberto Mantovan, Emanuele Longo, Harold J. W. Zandvliet, Pantelis Bampoulis, Yu Pan, Fan Li, Xia Wang, Payton Downey, Alessandro Molle   +9 more
wiley   +1 more source

An Integer Ambiguity Resolution Method Based on the Hybrid Adaptive Differential Evolution Grey Wolf Optimizer Algorithm

Algorithms
In Global Navigation Satellite Systems (GNSS), high-precision position coordinates are typically determined by establishing a double-difference carrier phase observation model and resolving the integer ambiguities within it. Therefore, the ability to fix
Jiangchao Tian, Xiyan Sun, Yuanfa Ji, Wuzheng Guo, Xizi Jia   +4 more
doaj   +1 more source

In Situ Measurement of Oxygen Vacancy Dynamics and Surface Exchange Reactions in Oxide Electrode under Solid Electrochemical Cell Operating Conditions

Advanced Energy Materials, EarlyView.
This study establishes an in situ electrochemical framework using dense bulk electrodes to identify defect chemistry and surface kinetics. While oxygen vacancy concentration is derived via bias modulation, surface exchange coefficients are quantified at open circuit voltage conditions to isolate kinetics.
Taeyun Kim, Jinsil Lee, Hee Jung Park, Ji Haeng Yu, José M. Serra, Jong Hoon Joo   +5 more
wiley   +1 more source

Improved HLLL Lattice Basis Reduction Algorithm to Solve GNSS Integer Ambiguity

International Journal of Aerospace Engineering, 2023
Recently, lattice theory has been widely used for integer ambiguity resolution in the Global Navigation Satellite System (GNSS). When using lattice theory to deal with integer ambiguity, we need to reduce the correlation between lattice bases to ensure ...
Kezhao Li, Chendong Tian, Yingxiang Jiao, Zhe Yue   +3 more
doaj   +1 more source

Single Epoch Ambiguity Resolution of Small-Scale CORS with Multi-Frequency GNSS

Remote Sensing, 2021
The network real-time kinematic (RTK) technique uses continuously operating reference stations (CORS) within a geographic area to model the distance dependent errors, allowing users in the area to solve ambiguities.
Shengyue Ji, Qianli Zheng, Duojie Weng, Wu Chen, Zhenjie Wang, Kaifei He   +5 more
doaj   +1 more source

Seeing Through the Face: Robust Facial Diagnosis Enhanced by Landmark Detection and Pose Normalization

Advanced Intelligent Systems, EarlyView.
This study proposes a robust, generalizable new approach for facial type diagnosis. Based on landmark detection and pose normalization, a 94.7% diagnostic accuracy is achieved by Combined Heatmap Regression and Coordinate Regression network. This research makes the AI‐generated preliminary diagnosis more interpretable and reducing the impact of ...
Qianyang Xie, Zixian Jiao, Guo Bai, Huimin Zhu, Dahe Zhang, Hui Li, Haixia Lu, Xin Nie, Qing Li, Duohong Zou, Zhiguo Yin, Peilun Li, Chi Yang   +12 more
wiley   +1 more source